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The OldSurge Archive documents plug style, manufacturer markings, certification markings, molded date codes, grounding-pin construction, strain-relief design, and other identifying features whenever possible. Comparative examination of multiple products has revealed significant variation despite otherwise similar electrical specifications and cord construction.
The OldSurge Archive documents plug style, manufacturer markings, certification markings, molded date codes, grounding-pin construction, strain-relief design, and other identifying features whenever possible. Comparative examination of multiple products has revealed significant variation despite otherwise similar electrical specifications and cord construction.
Comparative examination demonstrates that attachment plugs frequently changed independently of the products to which they were attached. Plug selection appears to have been influenced by manufacturer branding, supplier relationships, cord-set sourcing, installation requirements, and intended market position rather than electrical requirements alone.
Several documented right-angle plugs appear to have been designed around the historically common grounding-pin-down receptacle orientation. Modern grounding-pin-up installations alter the intended cord-routing path, causing some older right-angle designs to route upward rather than downward.


== Overview ==
== Overview ==
Line 58: Line 62:
! Plug Model
! Plug Model
! Plug UL File
! Plug UL File
! Cord UL File
|-
|-
| OS-0006
| OS-0006
Line 65: Line 68:
| CWI-03
| CWI-03
| E168486
| E168486
| E55178
|-
|-
| OS-0018
| OS-0018
Line 72: Line 74:
| CC-002
| CC-002
| E74779
| E74779
| E177868
|-
| OS-0019
| APC PRO7 (1994)
| YFC
| SF-31
| E94929
|-
| OS-0023
| APC PRO7 (1996)
| YFC
| SP-31
| E94929
|-
|-
| OS-0022
| OS-0022
Line 79: Line 92:
| Unknown
| Unknown
| Unknown
| Unknown
| E135710
|}
|}


Line 102: Line 114:
== Plug Evolution Within APC SurgeArrest Products ==
== Plug Evolution Within APC SurgeArrest Products ==


The APC SurgeArrest family provides one of the longest documented plug timelines preserved by the archive.
The APC SurgeArrest family provides one of the longest and best-documented attachment-plug timelines currently preserved by the OldSurge Archive.


Documented examples include:
Documented examples include:
Line 110: Line 122:
! Date
! Date
! Plug Style
! Plug Style
! Plug Family
! Notable Features
! Notable Features
|-
|-
Line 115: Line 128:
| 1994
| 1994
| Straight
| Straight
| Unbranded plug body
| YFC SF-31
| Earliest documented APC PRO7 plug; unbranded plug body.
|-
|-
| PRO7
| PRO7
| 1996
| 1996
| Straight
| Straight
| Unbranded plug body
| YFC SP-31
| Unbranded plug body; transitional APC PRO7 specimen.
|-
|-
| PRO7
| PRO7
| 1998
| 1998
| Straight
| Right-Angle
| APC-branded plug
| NEL MEI-009C
| Earliest documented APC right-angle plug.
|-
|-
| PRO7
| PRO7
| 1999
| 1999
| Straight
| Right-Angle
| APC-branded plug
| APC-branded AAM01
| Earliest documented APC-branded attachment plug.
|-
|-
| PRO7
| PRO7
| 2002
| 2002
| Straight
| Right-Angle
| APC-branded plug
| APC-branded AAM01
| APC branding molded directly into plug body.
|-
| PRO7
| 2006
| Right-Angle
| NEL ME-009C
| Return to unbranded NEL plug family.
|-
| PRO7
| 2008
| Right-Angle
| NEL MEI-009C
| Same NEL plug family documented on later PRO7 examples.
|-
|-
| PRO7
| PRO7
| 2015
| 2015
| Right-Angle
| Right-Angle
| Unbranded low-profile design
| NEL MEI-009C
| Late-production Philippine-manufactured specimen.
|-
|-
| PRO7
| PRO7
| 2017
| 2017
| Right-Angle
| Right-Angle
| Unbranded low-profile design
| NEL MEI-009C
| Late Schneider Electric-era implementation.
|-
| PER7T
| 1998
| Straight
| E173291 plug family
| Personal-series design utilizing a different plug family than the contemporary PRO7.
|-
|-
| PER7T
| PER7T
| 2021
| 2021
| Straight
| Straight
| Well Shin plug with molded manufacturing-code wheels
| Well Shin E138382
| Molded plug date-code wheels correlate with enclosure dates and factory QA documentation.
|}
|}
<br>


The documented APC examples demonstrate a progression from unbranded straight-blade plugs during the mid-1990s through branded variants during the recall period and ultimately to later low-profile right-angle designs manufactured during the Schneider Electric era.
The documented APC examples demonstrate that attachment-plug evolution was not strictly linear. APC employed multiple plug families simultaneously within different SurgeArrest product lines and occasionally reverted to previously documented plug designs after intermediate revisions.
 
The Professional-series PRO7 examples progressed from YFC straight-blade plugs during the mid-1990s to NEL right-angle plugs, followed by a brief period of APC-branded plug designs around 1999-2002 before returning to the NEL family used through at least 2017. By contrast, contemporary Personal-series products continued to utilize straight-blade designs despite sharing substantial enclosure and electrical-design heritage with Professional-series products.
 
The documented examples suggest that attachment-plug selection was influenced not only by manufacturing date but also by product family, market segment, supplier relationships, and installation requirements.


== Molded Date Codes ==
== Molded Date Codes ==


Several documentated products incorporate molded manufacturing indicators within the attachment plug.
Several documented products incorporate molded manufacturing indicators within the attachment plug.


These markings commonly appear as circular code wheels molded into the rear surface of the plug body. Such markings are believed to originate from the plug manufacturer rather than the product manufacturer and likely served purposes including:
These markings commonly appear as circular code wheels molded into the rear surface of the plug body. Such markings are believed to originate from the plug manufacturer rather than the product manufacturer and likely served purposes including:
Line 168: Line 210:
* Tooling identification
* Tooling identification


The archive's 2021 APC SurgeArrest Personal PER7T includes two molded code wheels on the rear surface of the plug body. Similar date-wheel systems are commonly encountered on injection-molded electrical components but are not yet fully documented within the archive.
The archive's 2021 APC SurgeArrest Personal PER7T (OS-0031) provides the most comprehensively documented example currently preserved by the OldSurge Archive.
 
The attachment plug incorporates two molded code wheels on the rear surface of the plug body. The markings appear consistent with manufacture of the plug assembly during November 2020. This date closely corresponds with molded date-wheel markings present in both enclosure halves of the same surge protector, which also indicate manufacture during November 2020.
 
Independent confirmation is provided by the original factory quality-assurance record supplied with the product. The record documents successful inspection and testing of the completed unit on 16 January 2021. Together, these records establish a documented chronology spanning plug production, enclosure production, and final factory testing.
 
The APC PER7T example therefore suggests that molded plug date-code systems may provide useful manufacturing information when corroborated by additional evidence such as enclosure date wheels, serial numbers, packaging records, or factory documentation.
 
Similar date-wheel systems are commonly encountered on injection-molded electrical components, but remain only partially documented within the archive. Additional examples may permit future correlation of specific coding schemes across multiple plug manufacturers and product families.
 
<gallery mode="packed" heights="250">
File:surge_APC_PER7T_7Z2102L08233_plug_datecodes_01.jpg|Molded manufacturing-code wheels on the rear surface of the APC PER7T attachment plug.
File:surge_APC_PER7T_7Z2102L08233_plug_datecodes_detail_01.jpg|Close-up view of the molded manufacturing-code wheels.
</gallery>


== Archive Observations ==
== Archive Observations ==
<br>
Several trends have emerged through comparison of documented examples.
<br>
Nearly all corded products currently preserved by the archive utilize NEMA 5-15P grounding plugs regardless of manufacturer, age, product family, or country of manufacture. This consistency mirrors the equally widespread use of 14 AWG SJT cordage documented elsewhere in the archive.
<br>
Manufacturers frequently changed cord suppliers while retaining similar attachment-plug styles. APC's documented SurgeArrest products provide a useful example. Although cord suppliers transitioned from Bon-Eagle and HRSA to Hi-Pro, Chung Kwang, Baohing, I-SHENG, and Well Shin over more than two decades of production, plug designs evolved more gradually and generally remained within a limited number of recognizable APC plug families.
<br>
The documented examples further demonstrate that identical attachment-plug designs often appeared across multiple brands and product families. Examples include the YFC SF-31 family documented on APC and Universal products and the NEL MEI-009C family documented across multiple generations of APC SurgeArrest products. These recurring plug families suggest long-term supplier relationships and broad industry use of certain attachment-plug designs.
<br>
Several product lines also reveal that attachment-plug evolution did not necessarily follow a simple chronological progression. APC's documented SurgeArrest products demonstrate that different plug styles could coexist within the same manufacturing period, with Personal-series and Professional-series products utilizing different attachment-plug designs despite sharing substantial enclosure and electrical-design heritage.
<br>
Direct-plug products including the Curtis SP-600 and Globe Electric 12-003-7MS demonstrate alternative approaches that eliminate attached cords entirely, incorporating the wall plug directly into the device structure.
<br>
The attachment plug frequently survives even when product labels, packaging, and documentation have been lost. As a result, plug markings may provide some of the most durable surviving evidence regarding manufacturing history, supplier relationships, certification status, and product identity.
<br>
The attachment-plug comparison is particularly informative. Both documented COXOC CO-001S specimens utilize the same COXOC-branded COX-01 attachment plug carrying UL file number E147517. However, OS-0030 exhibits no blade separation, deformation, or heat discoloration, while OS-0028 exhibits localized thermal discoloration and partial separation of the blade assemblies from the molded plug body. The comparison suggests that the damage observed on OS-0028 resulted from individual service conditions rather than from an inherent weakness in the plug design.
<br>
The archive additionally documents several examples of service-related plug deterioration, including heat discoloration, blade separation, corrosion, and contact wear. Comparison of multiple examples demonstrates that such conditions are often specific to a product's service history rather than characteristic of the underlying plug design.
<br>
== Conclusions ==
Comparison of documented attachment plugs demonstrates that plug design evolved independently from both surge-protector design and power-cord sourcing. Manufacturers frequently changed cord suppliers while retaining familiar plug families, and identical plug designs often appeared across multiple brands, manufacturers, and product generations.
The APC SurgeArrest family provides the clearest documented example. Archive specimens document multiple plug generations between 1994 and 2021, including YFC straight-blade plugs, NEL right-angle designs, APC-branded plug variants, and later Schneider Electric-era cord assemblies. Comparison of Personal-series and Professional-series products further demonstrates that different plug designs could be used concurrently within the same manufacturer's product lineup.
The documented examples show that attachment plugs were not merely interchangeable commodity components. Plug selection appears to have been influenced by supplier relationships, branding strategies, installation requirements, manufacturing practices, and product positioning. In several cases, attachment-plug markings preserve information that does not appear elsewhere on the product.
The archive additionally documents examples of manufacturer-branded plugs, supplier-branded plugs, molded date-code systems, direct-plug architectures, integrated cord-retention systems, rotating wall-mounted designs, and service-related plug deterioration. In several cases, attachment-plug markings provided the only surviving evidence regarding product origin, manufacturer identity, or component sourcing.
Examples such as the 2021 APC SurgeArrest Personal PER7T further demonstrate that plug-manufacturer date codes, enclosure date codes, serial numbers, and factory documentation can sometimes be correlated to reconstruct a detailed manufacturing chronology extending from component production through final assembly and testing.
Taken together, the documented examples demonstrate that attachment plugs constitute a significant and historically useful component category rather than interchangeable commodity hardware. Their markings, construction details, manufacturing features, and service-wear patterns frequently preserve information that survives long after packaging, documentation, and product labels have been lost.
== Oldsurge.com Examples ==
=== Tripp Lite SPIKE BAR SK6-6 (OS-0001) ===
<gallery mode="packed" heights="250">
File:Surge_TrippLite_SpikeBar_SK6-6_Plug_01.jpg|Grounded NEMA 5-15P attachment plug used on the Tripp Lite SPIKE BAR SK6-6 surge suppressor.
File:Surge_TrippLite_SpikeBar_SK6-6_Plug_02.jpg|Front view showing molded UL and CSA certification markings, grounding pin, and blade construction.
</gallery>
'''Associated Device'''
* OldSurge ID: OS-0001
* Product: Tripp Lite SPIKE BAR SK6-6
* Manufacturer: Tripp Lite
* Product Family: SPIKE BAR
'''Plug Characteristics'''
* Plug Type: NEMA 5-15P
* Plug Style: Straight Blade
* Grounded Attachment Plug
* Plug Manufacturer: Not Identified
* Plug Model: Not Identified
* Certification Marks:
** UL Listed
** CSA Certified
'''Notes'''
* Plug body incorporates textured grip surfaces on both sides.
* Plug includes molded warning "CONNECT TO GROUNDED OUTLET".
* UL and CSA certification logos are molded into the face of the plug body.
* No manufacturer name, model designation, UL file number, or CSA file number have yet been identified on the documented example.
=== Universal 71637 (OS-0002) ===
<gallery mode="packed" heights="250">
File:Surge_Universal_71637_1998_Plug_01.jpg|Grounded NEMA 5-15P attachment plug used on the Universal 71637 surge protector.
File:Surge_Universal_71637_1998_Plug_02.jpg|Plug markings showing YFC manufacturer identification, model SF-31, UL file E94923, and CSA file LR94903.
</gallery>
'''Associated Device'''
* OldSurge ID: OS-0002
* Product: Universal 71637
* Manufacturer: Universal
* Manufacturing Year: 1998
* Country of Manufacture: China
'''Plug Characteristics'''
* Plug Type: NEMA 5-15P
* Plug Style: Straight Blade
* Plug Manufacturer: YFC
* Plug Model: SF-31
* Plug UL File: E94923
* Plug CSA File: LR94903
'''Notes'''
* Utilizes a YFC SF-31 straight-blade grounding attachment plug.
* Externally similar to attachment plugs documented on APC SurgeArrest Professional PRO7 examples.
* Plug carries a different UL file number (E94923) than the APC examples documented to date.
* Product incorporates both AC surge suppression and RJ11 telephone-line surge protection.
=== Belkin SurgeMaster F9H710-06 (OS-0003) ===
<gallery mode="packed" heights="250">
File:surge-Belkin-SurgeMaster-F9H710-06-plug-belkinlogo_01.jpg|Belkin-branded NEMA 5-15P grounding attachment plug used on the SurgeMaster F9H710-06.
File:surge-Belkin-SurgeMaster-F9H710-06-plug-endview_01.jpg|Plug markings showing model CC-06 and UL file number E74196.
</gallery>
'''Associated Device'''
* OldSurge ID: OS-0003
* Product: Belkin SurgeMaster F9H710-06
* Manufacturer: Belkin
* Manufacturing Date: 1 November 2003
* Country of Manufacture: China
'''Plug Characteristics'''
* Plug Type: NEMA 5-15P
* Plug Style: Straight Blade
* Plug Branding: BELKIN
* Plug Model: CC-06
* Plug UL File: E74196
'''Notes'''
* Plug body incorporates molded BELKIN branding.
* One of the earliest branded attachment plugs currently documented by the OldSurge Archive.
* Plug markings identify model CC-06 and UL file E74196.
* Plug utilizes a molded straight-blade grounding configuration.
=== Staples 33895-US (OS-0004) ===
<gallery mode="packed" heights="250">
File:Surge_Staples_33895-US_2011_Plug_01.jpg|Right-angle NEMA 5-15P attachment plug used on the Staples 33895-US surge protector.
File:Surge_Staples_33895-US_2011_InService_01.jpg|Documented example in service. The right-angle plug routes upward when connected to a receptacle installed with the grounding slot in the upper position.
</gallery>
'''Associated Device'''
* OldSurge ID: OS-0004
* Product: Staples 33895-US
* Manufacturer: Staples
* Manufacturing Date: April 2011
* Country of Manufacture: China
'''Plug Characteristics'''
* Plug Type: NEMA 5-15P
* Plug Style: Right-Angle
* Grounded Attachment Plug
* Plug Model: ME-30PL
* Plug UL File: E143730
'''Notes'''
* Utilizes a low-profile right-angle attachment plug intended to reduce clearance requirements behind furniture and office equipment.
* Plug markings identify model ME-30PL and UL file E143730.
* When connected to a receptacle installed in the modern grounding-pin-up orientation, the cord exits upward before bending downward toward the connected equipment.
* The same plug design would route downward immediately when connected to a receptacle installed with the grounding slot below the energized conductors.
=== Amazon Basics 270103-B (OS-0005) ===
<gallery mode="packed" heights="250">
File:surge_AmazonBasics_270103-B_Plugprofile_01.jpg|Molded NEMA 5-15P grounding plug and strain-relief assembly used on the Amazon Basics 270103-B surge protector.
File:surge_AmazonBasics_270103-B_PlugClose_01.jpg|Front view of the molded grounding plug showing blade and grounding-pin configuration.
</gallery>
'''Associated Device'''
* OldSurge ID: OS-0005
* Product: Amazon Basics 270103-B Surge Protector
* Manufacturer: Amazon Basics
* Manufacturing Date: April 2026
* Country of Manufacture: Vietnam
'''Plug Characteristics'''
* Plug Type: NEMA 5-15P
* Plug Style: Straight Blade
* Grounded Attachment Plug
* Manufacturer: Not Identified
* Model: Not Identified
* Certification Markings: Not Identified
'''Notes'''
* The cord terminates in a molded straight-blade NEMA 5-15P grounding plug.
* The plug does not appear to display a readily visible manufacturer name or UL file number in the documented photographs.
* The associated cord is marked as manufactured by Kingtec (Vietnam) Technologies Co., Ltd.
=== Generic Model No. 2371, 0728, 2174 (OS-0006) ===
<gallery mode="packed" heights="250">
File:RelocatablePowerTap-Modl-No.-2371-0728-2174-plug-01.jpg|Grounded NEMA 5-15P attachment plug used on the unbranded Model No. 2371, 0728, 2174 relocatable power tap.
File:RelocatablePowerTap-Modl-No.-2371-0728-2174-plug-02.jpg|Plug markings showing CWCO manufacturer identification, model CWI-03, and UL file number E168486.
</gallery>
'''Associated Device'''
* OldSurge ID: OS-0006
* Product: Model No. 2371, 0728, 2174 Relocatable Power Tap
* Brand: Unknown / Unbranded
* Country of Manufacture: China
'''Plug Characteristics'''
* Plug Type: NEMA 5-15P
* Plug Manufacturer: CWCO
* Plug Model: CWI-03
* Plug UL File: E168486
=== Gemini Surge Model VG307 (OS-0007) ===
<gallery mode="packed" heights="250">
File:surge_Gemini_VG307_plugandcord_01.jpg|Grounded NEMA 5-15P attachment plug used on the Gemini Surge Model VG307 surge protector.
File:surge_Gemini_VG307_plugmarkings_01.jpg|Plug markings showing RHYTHM manufacturer identification and UL file number E91451.
</gallery>
'''Associated Device'''
* OldSurge ID: OS-0007
* Product: Gemini Surge Model VG307
* Manufacturer: Gemini
* Estimated Manufacturing Period: 1990s
* Country of Origin: China
'''Plug Characteristics'''
* Plug Type: NEMA 5-15P
* Plug Style: Straight Blade
* Plug Manufacturer: RHYTHM
* Plug Model: RP-?? (partially obscured)
* Plug UL File: E91451
'''Notes'''
* Plug markings identify RHYTHM as the attachment-plug manufacturer.
* Plug model designation begins with "RP-" but the remaining characters are not fully legible in the documented photograph.
* Plug UL file number E91451 is visible on the molded face of the plug body.
* The documented example utilizes a straight-blade grounding attachment plug with a ribbed grip design.
=== APC SurgeArrest Professional PRO7 (OS-0008, 2017) ===
<gallery mode="packed" heights="250">
File:surge_APC_Pro7_7Z1714L0535_bottom_plugandcable_01.jpg|Right-angle NEMA 5-15P attachment plug used on the 2017 APC SurgeArrest Professional PRO7.
File:surge_APC_Pro7_7Z1714L0535_plugclose_01.jpg|Plug markings showing NEL manufacturer identification, model MEI-009C, and UL file number E56406.
</gallery>
'''Associated Device'''
* OldSurge ID: OS-0008
* Product: APC SurgeArrest Professional PRO7
* Manufacturer: APC
* Serial Number: 7Z1714L05335
* Manufacturing Year: 2017
* Country of Origin: Philippines
'''Plug Characteristics'''
* Plug Type: NEMA 5-15P
* Plug Style: Right-Angle
* Plug Manufacturer: NEL
* Plug Model: MEI-009C
* Plug UL File: E56406
* Certification Marks:
** UL
** CSA
'''Notes'''
* Utilizes a low-profile right-angle attachment plug.
* Plug markings identify manufacturer NEL and model MEI-009C.
* Plug carries UL file number E56406.
* Cord exits toward the grounding-pin side of the plug body.
* When connected to receptacles installed in the grounding-pin-up orientation, the cord initially routes upward before turning downward.
* Represents the later Schneider Electric-era APC PRO7 plug design.
=== Universal 71632 (OS-0009) ===
<gallery mode="packed" heights="250">
File:surge_Universal_71632_1998_plug_cable_01.jpg|Grounded NEMA 5-15P attachment plug and attached power cord used on the Universal 71632 surge protector.
File:surge_Universal_71632_1998_plug_close_01.jpg|Plug markings showing YFC manufacturer identification, model SF-31, UL file E94923, and CSA file LR94903.
</gallery>
'''Associated Device'''
* OldSurge ID: OS-0009
* Product: Universal 71632
* Manufacturer: Universal
* Manufacturing Year: 1998
* Country of Manufacture: China
'''Plug Characteristics'''
* Plug Type: NEMA 5-15P
* Plug Style: Straight Blade
* Plug Manufacturer: YFC
* Plug Model: SF-31
* Plug UL File: E94923
* Plug CSA File: LR94903
'''Notes'''
* Utilizes a YFC SF-31 straight-blade grounding attachment plug.
* Plug markings and plug-body construction match those documented on the Universal 71637 (OS-0002).
* Carries UL file E94923 and CSA file LR94903.
* Represents a simpler companion product to the Universal 71637, omitting integrated telephone-line protection while retaining the same attachment-plug design.
=== Universal 71641 (OS-0010) ===
<gallery mode="packed" heights="250">
File:surge_universal_71641_yellowed_plug_01.jpg|Right-angle NEMA 5-15P attachment plug and power cord used on the Universal 71641 surge protector.
File:surge_universal_71641_yellowed_plug_detail_01.jpg|Plug markings showing model ME-30L and UL file number E143730.
</gallery>
'''Associated Device'''
* OldSurge ID: OS-0010
* Product: Universal 71641
* Manufacturer: Universal
* Manufacturing Date: 23 May 2004
* Country of Manufacture: China
'''Plug Characteristics'''
* Plug Type: NEMA 5-15P
* Plug Style: Right-Angle
* Grounded Attachment Plug
* Plug Model: ME-30L
* Plug UL File: E143730
'''Notes'''
* Utilizes a low-profile right-angle attachment plug.
* Plug markings identify model ME-30L and UL file E143730.
* Represents a significant design change from the YFC SF-31 straight-blade plugs documented on the Universal 71632 and 71637.
* Similar plug family to the right-angle plug documented on the Staples 33895-US.
=== APC SurgeArrest Professional PRO7 (OS-0011, 2008) ===
<gallery mode="packed" heights="250">
File:surge_APC_Pro7_2008_4Z0842P07546_plugandcable_01.jpg|Right-angle NEMA 5-15P attachment plug and associated power cord used on the 2008 APC SurgeArrest Professional PRO7.
File:surge_APC_Pro7_2008_4Z0842P07546_plugdetail_01.jpg|Plug markings showing NEL manufacturer identification, model MEI-009C, and UL file number E56406.
</gallery>
'''Associated Device'''
* OldSurge ID: OS-0011
* Product: APC SurgeArrest Professional PRO7
* Manufacturer: APC
* Serial Number: 4Z0842P07546
* Manufacturing Date: September 2008
* Country of Origin: Philippines
'''Plug Characteristics'''
* Plug Type: NEMA 5-15P
* Plug Style: Right-Angle
* Plug Manufacturer: NEL
* Plug Model: MEI-009C
* Plug UL File: E56406
'''Notes'''
* Utilizes a low-profile right-angle attachment plug.
* Plug markings identify manufacturer NEL and model MEI-009C.
* Plug carries UL file number E56406.
* The plug family appears identical to that documented on the archive's 2017 APC SurgeArrest Professional PRO7.
* Cord exits toward the grounding-pin side of the plug body.
* When connected to receptacles installed in the grounding-pin-up orientation, the cord initially routes upward before bending downward.
=== Yun YY-6CS (OS-0012) ===
<gallery mode="packed" heights="250">
File:surge_yun_yy-6cs_plug_Cord_01.jpg|Right-angle NEMA 5-15P attachment plug and attached power cord used on the Yun YY-6CS surge protector.
File:surge_yun_yy-6cs_plugcloseendon_01.jpg|Heat-damaged attachment plug showing molded QIAOPU manufacturer markings and certification information.
File:surge_yun_yy-6cs_plugdiscoloration_01.jpg|Close-up of thermal discoloration, corrosion, and oxidation concentrated around one blade of the attachment plug.
</gallery>
'''Associated Device'''
* OldSurge ID: OS-0012
* Product: Yun YY-6CS
* Manufacturer: Yun
* Manufacturing Date: July 2006
* Country of Manufacture: China
'''Plug Characteristics'''
* Plug Type: NEMA 5-15P
* Plug Style: Right-Angle
* Plug Manufacturer: QIAOPU
* Plug Model: WP-53
* Plug UL File: E232239
'''Notes'''
* Plug markings identify QIAOPU as the attachment-plug manufacturer.
* Plug model WP-53 and UL file E232239 remain legible despite substantial thermal damage.
* The documented example exhibits severe discoloration, oxidation, and corrosion concentrated around one blade.
* Green corrosion products are present adjacent to the affected blade.
* Thermal damage is sufficiently severe to obscure portions of the molded markings and alter the original color of the plug body.
* The attachment plug exhibits evidence of elevated temperatures during service but remained electrically intact when documented.
* Unlike many documented examples, the same manufacturer appears to have supplied both the attachment plug and the power cord assembly.
=== Universal 71641 (OS-0013) ===
<gallery mode="packed" heights="250">
File:surge_universal_71641_lightly_yellowed_plugandcord_01.jpg|Right-angle NEMA 5-15P attachment plug and attached power cord used on the Universal 71641 surge protector.
File:surge_universal_71641_lightly_yellowed_plug_detail01.jpg|Plug markings showing model ME-30L and UL file number E143730.
</gallery>
'''Associated Device'''
* OldSurge ID: OS-0013
* Product: Universal 71641
* Manufacturer: Universal
* Manufacturing Date: 23 May 2004
* Country of Manufacture: China
'''Plug Characteristics'''
* Plug Type: NEMA 5-15P
* Plug Style: Right-Angle
* Grounded Attachment Plug
* Plug Model: ME-30L
* Plug UL File: E143730
'''Notes'''
* Utilizes a low-profile right-angle attachment plug.
* Plug markings identify model ME-30L and UL file E143730.
* Plug appears identical to the attachment plug documented on the archive's yellowed Universal 71641 example.
* Despite sharing the same manufacturing date as the yellowed example, the documented specimen exhibits substantially less enclosure discoloration.
* Provides a useful comparison illustrating differences in long-term aging among otherwise identical products.
=== CyberPower P704URC1 (OS-0014) ===
<gallery mode="packed" heights="250">
File:surge_CyberPower_P704URC1_new_plug_detail_01.jpg|Low-profile right-angle NEMA 5-15P attachment plug showing ETL certification markings, control number 3139160, and KT-G plug marking.
File:surge_CyberPower_P704URC1_new_plug_cap_01.jpg|Attachment plug with factory-installed protective blade cap supplied with the documented example.
</gallery>
'''Associated Device'''
* OldSurge ID: OS-0014
* Product: CyberPower P704URC1
* Manufacturer: CyberPower
* Condition: New
* Country of Manufacture: Vietnam


Several trends have emerged through comparison of documented examples.
'''Plug Characteristics'''
* Plug Type: NEMA 5-15P
* Plug Style: Right-Angle
* Grounded Attachment Plug
* Plug Marking: KT-G
* Certification Agency: Intertek (ETL Listed)
* ETL Control Number: 3139160
 
'''Notes'''
* Utilizes a low-profile right-angle attachment plug intended to reduce clearance requirements behind furniture and equipment.
* Plug markings include ETL Listed certification, control number 3139160, and molded KT-G identification.
* A removable protective cap was installed over the plug blades when received from the manufacturer.
* The plug appears consistent with the Kingtec-manufactured cord assembly used on the documented example.
* Represents a modern Vietnam-manufactured plug design incorporating ETL certification rather than traditional UL file markings.
 
=== APC SurgeArrest Professional PRO7 (OS-0015, 1998) ===
 
<gallery mode="packed" heights="250">
File:surge_APC_Pro7_1998_Z98010201706_plugandcord_01.jpg|Right-angle NEMA 5-15P attachment plug and attached power cord used on the 1998 APC SurgeArrest Professional PRO7.
File:surge_APC_Pro7_1998_Z98010201706_plug_detail_01.jpg|Plug markings showing NEL manufacturer identification, model MEI-009C, and UL file number E56406.
File:surge_APC_Pro7_1998_Z98010201706_testing_pluggedin_corddown_01.jpg|Right-angle plug installed in a receptacle with the grounding contact below the energized conductors, allowing the cord to exit naturally downward as intended by the plug design.
</gallery>
 
'''Associated Device'''
* OldSurge ID: OS-0015
* Product: APC SurgeArrest Professional PRO7
* Manufacturer: APC
* Serial Number: Z98010201706
* Manufacturing Year: 1998
* Country of Origin: China
 
'''Plug Characteristics'''
* Plug Type: NEMA 5-15P
* Plug Style: Right-Angle
* Plug Manufacturer: NEL
* Plug Model: MEI-009C
* Plug UL File: E56406
 
'''Notes'''
* Utilizes a low-profile right-angle attachment plug.
* Plug markings identify manufacturer NEL and model MEI-009C.
* Plug carries UL file number E56406.
* Represents the earliest documented APC PRO7 currently known to utilize the NEL MEI-009C attachment-plug family.
* The plug routes the cord downward when connected to receptacles installed with the grounding contact below the energized conductors, a common installation orientation during the period.
* When connected to modern grounding-pin-up receptacles, the same plug routes the cord upward before turning downward.
 
=== Radio Shack 61-2140 (OS-0016) ===
 
<gallery mode="packed" heights="250">
File:surge_RadioShack_61-2140_plugandcord_01.jpg|Grounded NEMA 5-15P attachment plug and attached power cord used on the Radio Shack 61-2140 Appliance Surge Protector.
File:surge_RadioShack_61-2140_plugdetail_01.jpg|Plug markings showing FC manufacturer identification, model SF-31, UL file E91923, and CSA file LR62202.
</gallery>
 
'''Associated Device'''
* OldSurge ID: OS-0016
* Product: Radio Shack 61-2140 Appliance Surge Protector
* Manufacturer: Radio Shack
* Country of Origin: Assembled in Mexico


Nearly all corded products currently preserved by the archive utilize NEMA 5-15P grounding plugs regardless of manufacturer, age, product family, or country of manufacture. This consistency mirrors the equally widespread use of 14 AWG SJT cordage documented elsewhere in the archive.
'''Plug Characteristics'''
* Plug Type: NEMA 5-15P
* Plug Style: Straight Blade
* Plug Manufacturer: FC
* Plug Model: SF-31
* Plug UL File: E91923
* Plug CSA File: LR62202


Manufacturers frequently changed cord suppliers while retaining similar attachment-plug styles. APC's documented SurgeArrest products provide a useful example. Although Cord suppliers transitioned from Bon-Eagle and HRSA to Hi-Pro, Chung Kwang, Baohing, I-SHENG, and Well Shin over more than two decades of production, plug designs evolved more gradually and generally remained within a limited set of recognizable APC design styles.
'''Notes'''
* Utilizes a straight-blade grounding attachment plug.
* Plug markings identify manufacturer FC and model SF-31.
* Plug carries UL file E91923 and CSA file LR62202.
* Plug body incorporates molded textured grip surfaces similar to several other late-1990s and early-2000s attachment plugs documented by the OldSurge Archive.
* The documented example remained non-functional at the time of testing despite no obvious catastrophic damage being observed during teardown.


Direct-plug products including the Curtis SP-600 and Globe Electric 12-003-7MS demonstrate alternative approaches that eliminate attached cords entirely, incorporating the wall plug directly into the device structure.
=== APC SurgeArrest Professional PRO7 (OS-0017, 2002) ===


The attachment plug frequently survives even when product labels, packaging, and documentation have been lost. As a result, plug markings may provide some of the most durable surviving evidence regarding manufacturing history, supplier relationships, and product identity.
<gallery mode="packed" heights="250">
File:surge_APC_SurgeArrestPro_2Z0250P17876_cord_plug_01.jpg|APC-branded right-angle NEMA 5-15P attachment plug and attached power cord used on the December 2002 APC SurgeArrest Professional PRO7.
File:surge_APC_SurgeArrestPro_2Z0250P17876_plug_detail_01.jpg|Plug markings showing AAM01 manufacturer identification and UL file number E227089.
File:surge_APC_SurgeArrestPro_2Z0250P17876_pluglogo_01.jpg|Rear view of the attachment plug showing molded APC branding.
File:surge_APC_SurgeArrestPro_2Z0250P17876_pluggedintowall_01.jpg|APC-branded attachment plug installed in a receptacle with the grounding contact below the energized conductors, allowing the cord to exit naturally downward.
</gallery>


== Future Research ==
'''Associated Device'''
* OldSurge ID: OS-0017
* Product: APC SurgeArrest Professional PRO7
* Manufacturer: APC
* Serial Number: 2Z0250P17876
* Manufacturing Date: December 2002
* Country of Origin: China


Additional documentation may permit:
'''Plug Characteristics'''
* Plug Type: NEMA 5-15P
* Plug Style: Right-Angle
* Plug Manufacturer Marking: AAM01
* Plug UL File: E227089
* Plug Branding: APC


* Identification of currently unknown plug suppliers
'''Notes'''
* Correlation of molded date-code systems
* Utilizes a right-angle grounding attachment plug incorporating molded APC branding on the rear surface of the plug body.
* Comparison of plug manufacturing practices across brands
* Plug markings identify AAM01 and UL file number E227089.
* Mapping of supplier changes over time
* The documented example is the only APC PRO7 currently documented by the OldSurge Archive that incorporates APC branding directly into the attachment plug.
* Documentation of certification-mark evolution
* Represents a transitional design between the early straight-blade YFC-equipped PRO7 examples and the later NEL MEI-009C right-angle plug family.
== Gallery ==
* When connected to a receptacle installed with the grounding contact below the energized conductors, the cord exits naturally downward, illustrating the original intent of the plug design.
* When connected to a receptacle installed with the grounding contact above the energized conductors, the same plug routes the cord upward before bending downward.


=== ACE 33543 (OS-0018) ===
=== ACE 33543 (OS-0018) ===
Line 212: Line 762:
* Plug UL File: E74779
* Plug UL File: E74779


'''Cord Characteristics'''
=== APC SurgeArrest Professional PRO7 (OS-0019, 1994) ===
* Cord Type: SJT
* Conductor Size: 14 AWG × 3 Conductors
* Cord UL File: E177868
* Voltage Rating: 300V
* Temperature Rating: 60°C
* Flame Rating: VW-1 / FT2


=== Generic Model No. 2371, 0728, 2174 (OS-0006) ===
<gallery mode="packed" heights="250">
File:surge_APC_Pro7_Z94030204087_plugandcord_01.jpg|Straight-blade NEMA 5-15P attachment plug and associated power cord used on the 1994 APC SurgeArrest Professional PRO7.
File:surge_APC_Pro7_Z94030204087_plugdetail_01.jpg|Plug markings showing YFC manufacturer identification, model SF-31, and approval markings including UL file E94929.
</gallery>
 
'''Associated Device'''
* OldSurge ID: OS-0019
* Product: APC SurgeArrest Professional PRO7
* Manufacturer: APC (American Power Conversion)
* Serial Number: Z94030204087
* Manufacturing Year: 1994
* Country of Manufacture: China
 
'''Plug Characteristics'''
* Plug Manufacturer: YFC
* Plug Model: SF-31
* Plug UL File: E94929
* Plug CSA File: LR62202
 
'''Notes'''
* Earliest APC PRO7 currently documented by the OldSurge Archive.
* Only documented APC PRO7 currently known to utilize a straight-blade attachment plug.
* Later documented APC PRO7 examples utilize right-angle attachment plugs.
* Plug and cord assembly combines a YFC SF-31 attachment plug with a Bon-Eagle-manufactured power cord.
 
=== Curtis SP-600 (OS-0020) ===


<gallery mode="packed" heights="250">
<gallery mode="packed" heights="250">
File:RelocatablePowerTap-Modl-No.-2371-0728-2174-plug-01.jpg|Grounded NEMA 5-15P attachment plug used on the unbranded Model No. 2371, 0728, 2174 relocatable power tap.
File:surge_wallhugger_Curtis_SP-600_back_overview_01.jpg|Rear view showing the dual-plug wall-mount arrangement used to support the Curtis SP-600 without an attached power cord.
File:RelocatablePowerTap-Modl-No.-2371-0728-2174-plug-02.jpg|Plug markings showing CWCO manufacturer identification, model CWI-03, and UL file number E168486.
File:surge_wallhugger_Curtis_SP-600_back_data_01.jpg|Direct-plug assembly, certification markings, and model information molded into the rear housing.
File:surge_wallhugger_Curtis_SP-600_testing_01.jpg|Curtis SP-600 connected directly to a duplex receptacle during functional testing.
</gallery>
</gallery>


'''Associated Device'''
'''Associated Device'''
* OldSurge ID: OS-0006
* OldSurge ID: OS-0020
* Product: Model No. 2371, 0728, 2174 Relocatable Power Tap
* Product: Curtis SP-600
* Brand: Unknown / Unbranded
* Manufacturer: Curtis
* Product Type: Wall-Mounted Surge Protector
* Country of Manufacture: China
* Country of Manufacture: China
'''Plug Characteristics'''
* Plug Type: Dual NEMA 5-15P Assemblies
* Plug Style: Direct Plug
* Grounded Attachment Plugs: 2
* Cord: None
* Mounting Method: Occupies both receptacles of a standard duplex outlet
* UL File: E93801
* CSA File: LR83974
'''Notes'''
* Direct-plug wall-mounted surge protector incorporating two complete grounded plug assemblies.
* Unlike most modern wall-mounted surge protectors, the SP-600 does not utilize the center faceplate-retention screw.
* Mechanical retention is provided entirely by the two grounded plug assemblies.
* Represents the first wall-mounted surge protector documented by the OldSurge Archive.
* Demonstrates an alternative approach to power distribution that eliminates the need for an attached cord and conventional attachment plug.
* Integrated coaxial surge protection utilizes F-type IN and OUT connectors.
=== APC SurgeArrest Professional PRO7 (OS-0021, 1999) ===
<gallery mode="packed" heights="250">
File:surge_APC_Pro7_Z99080215662_plugandcord_01.jpg|APC-branded right-angle NEMA 5-15P attachment plug and attached six-foot power cord used on the August 1999 APC SurgeArrest Professional PRO7.
File:surge_APC_Pro7_Z99080215662_plug_prong_detail_01.jpg|Plug markings showing APC branding, additional approval markings, and UL file number E173251.
File:surge_APC_Pro7_Z99080215662_plug_back_detail_01.jpg|Rear view of the attachment plug showing molded APC branding.
File:surge_APC_Pro7_Z99080215662_pluggedin_detail_01.jpg|Close-up view of the APC-branded right-angle plug installed in a wall receptacle.
File:surge_APC_Pro7_Z99080215662_pluged_in_01.jpg|APC-branded attachment plug connected to a grounding-pin-down receptacle, illustrating the intended downward cord-routing behavior of the design.
</gallery>
'''Associated Device'''
* OldSurge ID: OS-0021
* Product: APC SurgeArrest Professional PRO7
* Manufacturer: APC (American Power Conversion)
* Serial Number: Z99080215662
* Manufacturing Date: August 1999
* Country of Origin: China


'''Plug Characteristics'''
'''Plug Characteristics'''
* Plug Type: NEMA 5-15P
* Plug Type: NEMA 5-15P
* Plug Manufacturer: CWCO
* Plug Style: Right-Angle
* Plug Model: CWI-03
* Plug Branding: APC
* Plug UL File: E168486
* Plug Manufacturer Marking: AAM01
* Plug UL File: E173251


'''Cord Characteristics'''
'''Notes'''
* Cord Manufacturer: CWCO
* Utilizes a right-angle grounding attachment plug incorporating molded APC branding on the rear surface of the plug body.
* Cord Type: SJT
* Plug markings identify AAM01 and UL file number E173251.
* Conductors: 3
* Represents the earliest APC-branded attachment plug currently documented by the OldSurge Archive.
* Wire Size: 14 AWG
* The attachment plug differs from the unbranded NEL MEI-009C plug family documented on the archive's 1998, 2008, and 2017 APC PRO7 specimens.
* Cord UL File: E55178
* When connected to a receptacle installed with the grounding contact
* Cord CSA File: LL40876
* Temperature Rating:
** UL: 75°C
** CSA: 60°C
* Flame Ratings:
** UL: VW-1
** CSA: FT2


=== S.L. Waber 952M (OS-0022) ===
=== S.L. Waber 952M (OS-0022) ===
Line 274: Line 874:
* Grounded Attachment Plug
* Grounded Attachment Plug
* Manufacturer: Not Identified
* Manufacturer: Not Identified
'''Cord Characteristics'''
* Cord Type: SJT
* Conductors: 3
* Wire Size: 14 AWG
* Cord UL File: E135710
* Cord CSA File: LL95737
* Flame Rating: FT2
* Manufacturer: Not Marked (possibly Bon-Eagle)
* Length: Approximately 9 ft (2.7 m)


'''Notes'''
'''Notes'''
Line 289: Line 879:
* Cord certification identifiers match examples associated with Bon-Eagle-manufactured cord assemblies documented elsewhere in the OldSurge Archive.
* Cord certification identifiers match examples associated with Bon-Eagle-manufactured cord assemblies documented elsewhere in the OldSurge Archive.
* No manufacturer markings or certification numbers have yet been identified on the attachment plug itself.
* No manufacturer markings or certification numbers have yet been identified on the attachment plug itself.
=== APC SurgeArrest Professional PRO7 (OS-0023, 1996) ===
<gallery mode="packed" heights="250">
File:surge_APC_Pro7_Z96030204796_plugandcord_01.jpg|Straight-blade NEMA 5-15P attachment plug and Bon-Eagle power-cord assembly used on the 1996 APC SurgeArrest Professional PRO7.
File:surge_APC_Pro7_Z96030204796_plugdetail_01.jpg|Plug markings showing YFC manufacturer identification, model SP-31, and UL file number E94929.
</gallery>
'''Associated Device'''
* OldSurge ID: OS-0023
* Product: APC SurgeArrest Professional PRO7
* Manufacturer: APC (American Power Conversion)
* Serial Number: Z96030204796
* Manufacturing Year: 1996
* Country of Manufacture: China
'''Plug Characteristics'''
* Plug Type: NEMA 5-15P
* Plug Style: Straight-Blade
* Plug Manufacturer: YFC
* Plug Model: SP-31
* Plug UL File: E94929
'''Notes'''
* Utilizes a YFC SP-31 straight-blade grounding attachment plug.
* Plug carries the same UL file number, E94929, observed on the documented 1994 APC PRO7 example.
* Bon-Eagle-manufactured cord assembly identified by UL file E135710.
* Represents a transitional APC PRO7 specimen produced between the documented 1994 and 1998 generations.
=== PowerSentry Model 626 (OS-0024) ===
<gallery mode="packed" heights="250">
File:surge_PowerSentry_626_cord_and_plug_01.jpg|Straight-blade NEMA 5-15P attachment plug and attached power cord used on the PowerSentry Model 626 surge protector.
File:surge_PowerSentry_626_plug_detail_01.jpg|Plug markings showing model ME-301H, UL file E143780SP, and CSA file LR98180.
File:surge_PowerSentry_626_plug_clip_01.jpg|Integrated cord-retention clip molded into the attachment-plug body.
</gallery>
'''Associated Device'''
* OldSurge ID: OS-0024
* Product: PowerSentry Model 626
* Manufacturer: PowerSentry
* Manufacturing Date: 20 October 2002
* Country of Origin: China
'''Plug Characteristics'''
* Plug Type: NEMA 5-15P
* Plug Style: Straight Blade
* Plug Model: ME-301H
* Plug UL File: E143780SP
* Plug CSA File: LR98180
* Integrated Cord-Retention Clip: Yes
'''Notes'''
* Utilizes a straight-blade grounding attachment plug incorporating an integrated cord-retention clip.
* Plug markings identify model ME-301H, UL file E143780SP, and CSA file LR98180.
* The integrated retention clip engages molded cord-storage guides built into the surge-protector enclosure.
* Represents the first plug-mounted cord-retention system documented by the OldSurge Archive.
* Forms part of a complete cord-management system consisting of enclosure-mounted cord guides and a retention feature built directly into the attachment plug.
* Unlike the APC PRO7 examples manufactured during the same period, the PowerSentry utilizes a straight-blade plug despite being a contemporary seven-outlet surge protector.
=== APC SurgeArrest Professional PRO7 (OS-0025, 2006) ===
<gallery mode="packed" heights="250">
File:surge_APC_Pro7_4Z0638P12907_plug_cord_01.jpg|Right-angle NEMA 5-15P attachment plug and attached Chung Kwang-manufactured power cord used on the June 2006 APC SurgeArrest Professional PRO7.
File:surge_APC_Pro7_4Z0638P12907_plug_detail_01.jpg|Plug markings showing NEL manufacturer identification, model ME-009C, and UL file number E56406.
File:surge_APC_Pro7_4Z0638P12907_plug_back_01.jpg|Rear view of the attachment plug showing the absence of APC branding.
</gallery>
'''Associated Device'''
* OldSurge ID: OS-0025
* Product: APC SurgeArrest Professional PRO7
* Manufacturer: APC
* Serial Number: 4Z0638P12907
* Manufacturing Date: June 2006
* Country of Origin: Philippines
'''Plug Characteristics'''
* Plug Type: NEMA 5-15P
* Plug Style: Right-Angle
* Plug Manufacturer: NEL
* Plug Model: ME-009C
* Plug UL File: E56406
'''Notes'''
* Utilizes a right-angle grounding attachment plug manufactured by NEL.
* Plug markings identify model ME-009C and UL file number E56406.
* Unlike the archive's documented 1999 and 2002 APC PRO7 specimens, the plug does not incorporate molded APC branding.
* The plug family matches that documented on the archive's 1998, 2008, and 2017 APC PRO7 examples.
* Represents APC's return to the NEL ME-009C plug family following the APC-branded plug generation documented in 1999 and 2002.
* The plug is attached to a Chung Kwang-manufactured SJT 14/3 power cord carrying UL file number E54024 and CSA file number LL65965.
=== Globe Electric 12-003-7MS (OS-0026) ===
<gallery mode="packed" heights="250">
File:surge_globe_12-003-7MS_back_overview_01.jpg|Rear view showing the direct-plug attachment assembly, stabilizing pin, date wheels, UL label, and rotating outlet-bank construction.
File:surge_globe_12-003-7MS_bottom_data_01.jpg|Direct-plug assembly and molded product markings identifying model 12-003-7MS and item number 7791301.
File:surge_globe_12-003-7MS_testing_01.jpg|Globe Electric 12-003-7MS connected to utility power with SURGE and GROUND indicators illuminated.
</gallery>
'''Associated Device'''
* OldSurge ID: OS-0026
* Product: Globe Electric 12-003-7MS
* Manufacturer: Globe Electric
* Product Family: Space Plug
* Manufacturing Date: April 2014
* Country of Manufacture: China
'''Plug Characteristics'''
* Plug Type: Direct Plug
* Plug Configuration: NEMA 5-15P
* Grounded Attachment Plug: 1
* Stabilizing Pin: Yes
* Cord: None
* Faceplate-Retention Screw: No
* Mounting Method: Direct-plug wall-tap design
'''Notes'''
* Direct-plug wall-mounted surge protector incorporating a single grounded NEMA 5-15P plug and a non-conductive stabilizing pin.
* Unlike most modern wall-mounted surge protectors, the unit does not utilize the receptacle faceplate-retention screw.
* Mechanical support is provided by the attachment plug together with the adjacent stabilizing pin.
* Rotating outlet banks allow connected power cords to be routed parallel to the wall surface.
* Represents a later-generation wall-tap design emphasizing outlet flexibility and integrated USB charging rather than communications-line protection.
* One of only two direct-plug surge protectors currently documented by the OldSurge Archive, together with the Curtis SP-600.
=== APC SurgeArrest Professional PRO7 (OS-0027, 2015) ===
<gallery mode="packed" heights="250">
File:surge_APC_Pro7_7Z1550L09782_plugandcord_01.jpg|Right-angle NEMA 5-15P attachment plug and attached I-SHENG-manufactured power cord used on the 2015 APC SurgeArrest Professional PRO7.
File:surge_APC_Pro7_7Z1550L09782_plug_prongs_01.jpg|Plug markings showing NEL manufacturer identification, model MEI-009C, and UL file number E58406.
File:surge_APC_Pro7_7Z1550L09782_plug_back_nologo_01.jpg|Rear view of the attachment plug showing the absence of APC branding.
</gallery>
'''Associated Device'''
* OldSurge ID: OS-0027
* Product: APC SurgeArrest Professional PRO7
* Manufacturer: APC
* Serial Number: 7Z1550L09782
* Manufacturing Date: 2015
* Country of Origin: Philippines
'''Plug Characteristics'''
* Plug Type: NEMA 5-15P
* Plug Style: Right-Angle
* Plug Manufacturer: NEL
* Plug Model: MEI-009C
* Plug UL File: E58406
'''Notes'''
* Utilizes a right-angle grounding attachment plug manufactured by NEL.
* Plug markings identify model MEI-009C and UL file number E58406.
* The plug body does not incorporate APC branding.
* Plug configuration matches the attachment-plug family documented on the archive's 2006, 2008, and 2017 APC PRO7 specimens.
* Represents a late-production APC PRO7 example manufactured immediately prior to the archive's documented 2017 specimen.
* Attached to an I-SHENG-manufactured SJT 14/3 power cord.
=== COXOC CO-001S (OS-0028) ===
<gallery mode="packed" heights="250">
File:surge_COXOC_CO-001S_plugandcord_01.jpg|Straight-blade NEMA 5-15P attachment plug and attached Apollo-manufactured power cord used on the COXOC CO-001S surge protector.
File:surge_COXOC_CO-001S_plugdetail_01.jpg|Plug markings showing model COX-01, UL file E147517, CSA certification marking, and evidence of previous heat exposure.
File:surge_COXOC_CO-001S_pluglogo_01.jpg|Molded COXOC logo incorporated into the attachment-plug body.
File:surge_COXOC_CO-001S_plugtopl_01.jpg|Rear view showing the molded COXOC logo and discoloration near the current-carrying blades.
File:surge_COXOC_CO-001S_inthewild_01.jpg|Documented example photographed in its final service location prior to retirement and archival documentation.
</gallery>
'''Associated Device'''
* OldSurge ID: OS-0028
* Product: COXOC CO-001S
* Manufacturer: COXOC
* Manufacturing Date: 1990s (estimated)
* Country of Origin: China
'''Plug Characteristics'''
* Plug Type: NEMA 5-15P
* Plug Style: Straight Blade
* Plug Branding: COXOC
* Plug Model: COX-01
* Plug UL File: E147517
* Certification Marks:
** CSA
'''Notes'''
* Plug markings identify model COX-01 and UL file number E147517.
* Plug incorporates molded COXOC branding on the body and represents the only prominent external COXOC branding identified on the documented artifact.
* The attachment plug provided the evidence necessary to positively identify the manufacturer of the surge protector.
* Localized discoloration is present adjacent to both current-carrying blades.
* Minor separation is visible between the blade assemblies and the surrounding molded plastic body.
* The observed condition is consistent with previous exposure to elevated temperatures at the plug-to-receptacle interface.
* A second documented COXOC CO-001S example does not exhibit comparable discoloration or blade separation, suggesting that the condition is specific to the documented specimen rather than an inherent characteristic of the product design.
* Provides one of the clearest examples in the OldSurge Archive of a plug exhibiting both identifiable manufacturer branding and visible evidence of long-term thermal stress.
=== APC SurgeArrest Personal PER7T (OS-0029, 1998) ===
<gallery mode="packed" heights="250">
File:surge_APC_PER7T_Z98010214399_plugandcord_01.jpg|Straight-blade NEMA 5-15P attachment plug and attached HRSA-manufactured power cord used on the APC SurgeArrest Personal PER7T.
File:surge_APC_PER7T_Z98010214399_plugdetail_01.jpg|Plug markings showing UL file number E173291 together with grounding-pin wear accumulated during long-term service.
</gallery>
'''Associated Device'''
* OldSurge ID: OS-0029
* Product: APC SurgeArrest Personal PER7T
* Manufacturer: APC (American Power Conversion)
* Product Family: SurgeArrest Personal
* Serial Number: Z98010214399
* Manufacturing Date: 1998
* Country of Origin: China
'''Plug Characteristics'''
* Plug Type: NEMA 5-15P
* Plug Style: Straight Blade
* Grounded Attachment Plug
* Plug UL File: E173291
'''Notes'''
* Utilizes a molded straight-blade grounding attachment plug.
* Plug markings identify UL file number E173291.
* Moderate wear is visible on the grounding pin, consistent with repeated insertion and removal during service life.
* Differs from the archive's contemporary 1998 APC SurgeArrest Professional PRO7 specimen, which utilizes a right-angle attachment plug.
* Demonstrates that APC employed different plug designs within the Personal and Professional SurgeArrest product families despite substantial similarities in enclosure architecture and protection ratings.
* Attached to an HRSA-manufactured SJT 14/3 power cord carrying UL file number E69167 and CSA file number LL52902.
=== COXOC CO-001S Variant (OS-0030) ===
<gallery mode="packed" heights="250">
File:surge_COXOC_CO-001S_variant_OS-0030_plugandcord_01.jpg|Molded straight-blade NEMA 5-15P attachment plug and shortened COXOC-branded power-cord assembly used on COXOC CO-001S Variant (OS-0030).
File:surge_COXOC_CO-001S_variant_OS-0030_plug_01.jpg|Rear of the attachment plug showing molded COXOC branding.
File:surge_COXOC_CO-001S_variant_OS-0030_plugdetail_01.jpg|Close-up view of the molded COXOC logo incorporated into the plug body.
File:surge_COXOC_CO-001S_variant_OS-0030_plugenddetail01.jpg|Plug-face markings showing model COX-01, UL file number E147517, CSA certification marking, and intact blade retention.
</gallery>
'''Associated Device'''
* OldSurge ID: OS-0030
* Product: COXOC CO-001S Variant
* Manufacturer: COXOC
* Manufacturing Date: 1990s (estimated)
* Country of Origin: China
'''Plug Characteristics'''
* Plug Type: NEMA 5-15P
* Plug Style: Straight Blade
* Plug Branding: COXOC
* Plug Model: COX-01
* Plug UL File: E147517
* Certification Marks:
** CSA
'''Notes'''
* Attachment plug incorporates molded COXOC branding identical to that documented on COXOC CO-001S (OS-0028).
* Plug markings identify model COX-01 and UL file number E147517.
* Plug exhibits no significant discoloration, deformation, or heat-related damage.
* Blade retention remains intact with no visible separation between the metal blade assemblies and surrounding molded plastic body.
* Provides a useful comparison with COXOC CO-001S (OS-0028), whose attachment plug exhibits localized heat discoloration and partial blade separation.
* Supports the conclusion that the damage documented on OS-0028 was likely the result of that specimen's individual service history rather than an inherent characteristic of the COX-01 plug design.
* Demonstrates that COXOC retained the same attachment-plug design despite utilizing a different cord assembly than the archive's previously documented COXOC CO-001S specimen.
=== APC SurgeArrest Personal PER7T (OS-0031, 2021) ===
<gallery mode="packed" heights="250">
File:surge_APC_PER7T_7Z2102L08233_plug_and_cord_01.jpg|Straight-blade NEMA 5-15P attachment plug and attached Well Shin-manufactured power cord supplied with the 2021 APC SurgeArrest Personal PER7T recall-replacement unit.
File:surge_APC_PER7T_7Z2102L08233_plug_detail_01.jpg|Plug-face markings showing model information, certification markings, and UL file number E138382.
File:surge_APC_PER7T_7Z2102L08233_plug_datecodes_01.jpg|Rear surface of the attachment plug showing molded manufacturing-code wheels incorporated into the plug body.
File:surge_APC_PER7T_7Z2102L08233_plug_datecodes_detail_01.jpg|Close-up view of the molded manufacturing-code wheels indicating apparent manufacture during November 2020.
</gallery>
'''Associated Device'''
* OldSurge ID: OS-0031
* Product: APC SurgeArrest Personal PER7T
* Manufacturer: APC by Schneider Electric
* Product Family: SurgeArrest Personal
* Serial Number: 7Z2102L08233
* Manufacturing Date: January 2021
* Country of Origin: Philippines
'''Plug Characteristics'''
* Plug Type: NEMA 5-15P
* Plug Style: Straight Blade
* Plug Manufacturer: Well Shin
* Plug Model: WS-003? (partially obscured)
* Plug UL File: E138382
* Molded Manufacturing-Code Wheels: Present
'''Notes'''
* Utilizes a molded straight-blade grounding attachment plug manufactured by Well Shin.
* Plug-face markings identify UL file number E138382.
* Rear surface incorporates molded manufacturing-code wheels not present on earlier APC PER7T examples documented by the archive.
* Date-code wheel markings appear consistent with November 2020 manufacture of the plug assembly.
* Plug date codes correspond closely with molded enclosure date wheels documenting November 2020 manufacture of the enclosure components.
* The plug-manufacturing date predates the documented factory quality-assurance record dated 2021-01-16, supporting the overall production chronology of the replacement unit.
* The date-code wheels are believed to originate from the plug manufacturer rather than APC and likely served purposes including mold traceability, production tracking, and quality control.
* Represents the most comprehensively documented attachment-plug chronology currently preserved within the OldSurge Archive, with independently documented plug, enclosure, factory-test, and product-level manufacturing records.


== Related Articles ==
== Related Articles ==

Latest revision as of 21:07, 9 November 2026

Plug Comparison documents the attachment plugs used on surge protectors, power strips, relocatable power taps, UPS systems, and related power-distribution equipment preserved by the OldSurge Archive.

Although often overlooked, attachment plugs provide valuable evidence regarding manufacturing practices, component sourcing, safety standards, and product evolution. Differences in plug design can reveal changing supplier relationships, construction methods, safety requirements, and branding strategies that are not always visible elsewhere within a product.

The OldSurge Archive documents plug style, manufacturer markings, certification markings, molded date codes, grounding-pin construction, strain-relief design, and other identifying features whenever possible. Comparative examination of multiple products has revealed significant variation despite otherwise similar electrical specifications and cord construction.

Comparative examination demonstrates that attachment plugs frequently changed independently of the products to which they were attached. Plug selection appears to have been influenced by manufacturer branding, supplier relationships, cord-set sourcing, installation requirements, and intended market position rather than electrical requirements alone.

Several documented right-angle plugs appear to have been designed around the historically common grounding-pin-down receptacle orientation. Modern grounding-pin-up installations alter the intended cord-routing path, causing some older right-angle designs to route upward rather than downward.

Overview

Most products documented by the archive utilize North American three-prong grounding plugs conforming to the NEMA 5-15P standard.

Common variations include:

  • Straight-blade plugs
  • Right-angle plugs
  • Branded and unbranded plugs
  • Plugs incorporating molded manufacturer identification
  • Plugs incorporating molded date-code wheels
  • Plugs carrying independent certification markings

Although electrically interchangeable in normal use, these variations can provide useful information regarding manufacturing date, supplier relationships, safety compliance, and product positioning.

Style Description Typical Use
NEMA 5-15P Straight Plug exits perpendicular to the wall surface (straight out) Traditional surge protectors and power strips
NEMA 5-15P Right-Angle Cord exits at 90 degrees Furniture installations and modern surge protectors
Direct Plug Plug integrated directly into the device with no attached cord Wall-mounted surge protectors and outlet expanders

Documented Attachment-Plug Characteristics

Notable plug features documented by the archive include:

  • Unbranded straight-blade APC plugs (1994-1996)
  • APC-branded plugs (1998-2002)
  • Right-angle PRO7 plugs (2015-2017)
  • Belkin-branded plugs
  • COXOC-branded plugs
  • Globe Electric direct-plug construction
  • Curtis dual-plug wall-hugger architecture
  • Molded date-code wheels
  • Supplier-specific certification markings
OldSurge ID Device Plug Manufacturer Plug Model Plug UL File
OS-0006 Generic 2371, 0728, 2174 CWCO CWI-03 E168486
OS-0018 ACE 33543 QS CC-002 E74779
OS-0019 APC PRO7 (1994) YFC SF-31 E94929
OS-0023 APC PRO7 (1996) YFC SP-31 E94929
OS-0022 S.L. Waber 952M Unknown Unknown Unknown

Manufacturer Branding

Some manufacturers incorporated branding directly into the plug body.

Documented examples include:

  • APC
    • PRO7 (1998, 1999, 2002)
  • Belkin
    • SurgeMaster F9H710-06
  • COXOC
    • CO-001S
    • CO-001S Variant (OS-0030)

Many other documented products utilize unbranded attachment plugs despite otherwise extensive product branding.

Plug Evolution Within APC SurgeArrest Products

The APC SurgeArrest family provides one of the longest and best-documented attachment-plug timelines currently preserved by the OldSurge Archive.

Documented examples include:

Model Date Plug Style Plug Family Notable Features
PRO7 1994 Straight YFC SF-31 Earliest documented APC PRO7 plug; unbranded plug body.
PRO7 1996 Straight YFC SP-31 Unbranded plug body; transitional APC PRO7 specimen.
PRO7 1998 Right-Angle NEL MEI-009C Earliest documented APC right-angle plug.
PRO7 1999 Right-Angle APC-branded AAM01 Earliest documented APC-branded attachment plug.
PRO7 2002 Right-Angle APC-branded AAM01 APC branding molded directly into plug body.
PRO7 2006 Right-Angle NEL ME-009C Return to unbranded NEL plug family.
PRO7 2008 Right-Angle NEL MEI-009C Same NEL plug family documented on later PRO7 examples.
PRO7 2015 Right-Angle NEL MEI-009C Late-production Philippine-manufactured specimen.
PRO7 2017 Right-Angle NEL MEI-009C Late Schneider Electric-era implementation.
PER7T 1998 Straight E173291 plug family Personal-series design utilizing a different plug family than the contemporary PRO7.
PER7T 2021 Straight Well Shin E138382 Molded plug date-code wheels correlate with enclosure dates and factory QA documentation.

The documented APC examples demonstrate that attachment-plug evolution was not strictly linear. APC employed multiple plug families simultaneously within different SurgeArrest product lines and occasionally reverted to previously documented plug designs after intermediate revisions.

The Professional-series PRO7 examples progressed from YFC straight-blade plugs during the mid-1990s to NEL right-angle plugs, followed by a brief period of APC-branded plug designs around 1999-2002 before returning to the NEL family used through at least 2017. By contrast, contemporary Personal-series products continued to utilize straight-blade designs despite sharing substantial enclosure and electrical-design heritage with Professional-series products.

The documented examples suggest that attachment-plug selection was influenced not only by manufacturing date but also by product family, market segment, supplier relationships, and installation requirements.

Molded Date Codes

Several documented products incorporate molded manufacturing indicators within the attachment plug.

These markings commonly appear as circular code wheels molded into the rear surface of the plug body. Such markings are believed to originate from the plug manufacturer rather than the product manufacturer and likely served purposes including:

  • Mold traceability
  • Production tracking
  • Quality control
  • Manufacturing-date identification
  • Tooling identification

The archive's 2021 APC SurgeArrest Personal PER7T (OS-0031) provides the most comprehensively documented example currently preserved by the OldSurge Archive.

The attachment plug incorporates two molded code wheels on the rear surface of the plug body. The markings appear consistent with manufacture of the plug assembly during November 2020. This date closely corresponds with molded date-wheel markings present in both enclosure halves of the same surge protector, which also indicate manufacture during November 2020.

Independent confirmation is provided by the original factory quality-assurance record supplied with the product. The record documents successful inspection and testing of the completed unit on 16 January 2021. Together, these records establish a documented chronology spanning plug production, enclosure production, and final factory testing.

The APC PER7T example therefore suggests that molded plug date-code systems may provide useful manufacturing information when corroborated by additional evidence such as enclosure date wheels, serial numbers, packaging records, or factory documentation.

Similar date-wheel systems are commonly encountered on injection-molded electrical components, but remain only partially documented within the archive. Additional examples may permit future correlation of specific coding schemes across multiple plug manufacturers and product families.

  • Molded manufacturing-code wheels on the rear surface of the APC PER7T attachment plug.
    Molded manufacturing-code wheels on the rear surface of the APC PER7T attachment plug.
  • Close-up view of the molded manufacturing-code wheels.
    Close-up view of the molded manufacturing-code wheels.

Archive Observations


Several trends have emerged through comparison of documented examples.
Nearly all corded products currently preserved by the archive utilize NEMA 5-15P grounding plugs regardless of manufacturer, age, product family, or country of manufacture. This consistency mirrors the equally widespread use of 14 AWG SJT cordage documented elsewhere in the archive.
Manufacturers frequently changed cord suppliers while retaining similar attachment-plug styles. APC's documented SurgeArrest products provide a useful example. Although cord suppliers transitioned from Bon-Eagle and HRSA to Hi-Pro, Chung Kwang, Baohing, I-SHENG, and Well Shin over more than two decades of production, plug designs evolved more gradually and generally remained within a limited number of recognizable APC plug families.
The documented examples further demonstrate that identical attachment-plug designs often appeared across multiple brands and product families. Examples include the YFC SF-31 family documented on APC and Universal products and the NEL MEI-009C family documented across multiple generations of APC SurgeArrest products. These recurring plug families suggest long-term supplier relationships and broad industry use of certain attachment-plug designs.
Several product lines also reveal that attachment-plug evolution did not necessarily follow a simple chronological progression. APC's documented SurgeArrest products demonstrate that different plug styles could coexist within the same manufacturing period, with Personal-series and Professional-series products utilizing different attachment-plug designs despite sharing substantial enclosure and electrical-design heritage.
Direct-plug products including the Curtis SP-600 and Globe Electric 12-003-7MS demonstrate alternative approaches that eliminate attached cords entirely, incorporating the wall plug directly into the device structure.
The attachment plug frequently survives even when product labels, packaging, and documentation have been lost. As a result, plug markings may provide some of the most durable surviving evidence regarding manufacturing history, supplier relationships, certification status, and product identity.
The attachment-plug comparison is particularly informative. Both documented COXOC CO-001S specimens utilize the same COXOC-branded COX-01 attachment plug carrying UL file number E147517. However, OS-0030 exhibits no blade separation, deformation, or heat discoloration, while OS-0028 exhibits localized thermal discoloration and partial separation of the blade assemblies from the molded plug body. The comparison suggests that the damage observed on OS-0028 resulted from individual service conditions rather than from an inherent weakness in the plug design.
The archive additionally documents several examples of service-related plug deterioration, including heat discoloration, blade separation, corrosion, and contact wear. Comparison of multiple examples demonstrates that such conditions are often specific to a product's service history rather than characteristic of the underlying plug design.

Conclusions

Comparison of documented attachment plugs demonstrates that plug design evolved independently from both surge-protector design and power-cord sourcing. Manufacturers frequently changed cord suppliers while retaining familiar plug families, and identical plug designs often appeared across multiple brands, manufacturers, and product generations.

The APC SurgeArrest family provides the clearest documented example. Archive specimens document multiple plug generations between 1994 and 2021, including YFC straight-blade plugs, NEL right-angle designs, APC-branded plug variants, and later Schneider Electric-era cord assemblies. Comparison of Personal-series and Professional-series products further demonstrates that different plug designs could be used concurrently within the same manufacturer's product lineup.

The documented examples show that attachment plugs were not merely interchangeable commodity components. Plug selection appears to have been influenced by supplier relationships, branding strategies, installation requirements, manufacturing practices, and product positioning. In several cases, attachment-plug markings preserve information that does not appear elsewhere on the product.

The archive additionally documents examples of manufacturer-branded plugs, supplier-branded plugs, molded date-code systems, direct-plug architectures, integrated cord-retention systems, rotating wall-mounted designs, and service-related plug deterioration. In several cases, attachment-plug markings provided the only surviving evidence regarding product origin, manufacturer identity, or component sourcing.

Examples such as the 2021 APC SurgeArrest Personal PER7T further demonstrate that plug-manufacturer date codes, enclosure date codes, serial numbers, and factory documentation can sometimes be correlated to reconstruct a detailed manufacturing chronology extending from component production through final assembly and testing.

Taken together, the documented examples demonstrate that attachment plugs constitute a significant and historically useful component category rather than interchangeable commodity hardware. Their markings, construction details, manufacturing features, and service-wear patterns frequently preserve information that survives long after packaging, documentation, and product labels have been lost.

Oldsurge.com Examples

Tripp Lite SPIKE BAR SK6-6 (OS-0001)

  • Grounded NEMA 5-15P attachment plug used on the Tripp Lite SPIKE BAR SK6-6 surge suppressor.
    Grounded NEMA 5-15P attachment plug used on the Tripp Lite SPIKE BAR SK6-6 surge suppressor.
  • Front view showing molded UL and CSA certification markings, grounding pin, and blade construction.
    Front view showing molded UL and CSA certification markings, grounding pin, and blade construction.

Associated Device

  • OldSurge ID: OS-0001
  • Product: Tripp Lite SPIKE BAR SK6-6
  • Manufacturer: Tripp Lite
  • Product Family: SPIKE BAR

Plug Characteristics

  • Plug Type: NEMA 5-15P
  • Plug Style: Straight Blade
  • Grounded Attachment Plug
  • Plug Manufacturer: Not Identified
  • Plug Model: Not Identified
  • Certification Marks:
    • UL Listed
    • CSA Certified

Notes

  • Plug body incorporates textured grip surfaces on both sides.
  • Plug includes molded warning "CONNECT TO GROUNDED OUTLET".
  • UL and CSA certification logos are molded into the face of the plug body.
  • No manufacturer name, model designation, UL file number, or CSA file number have yet been identified on the documented example.

Universal 71637 (OS-0002)

  • Grounded NEMA 5-15P attachment plug used on the Universal 71637 surge protector.
    Grounded NEMA 5-15P attachment plug used on the Universal 71637 surge protector.
  • Plug markings showing YFC manufacturer identification, model SF-31, UL file E94923, and CSA file LR94903.
    Plug markings showing YFC manufacturer identification, model SF-31, UL file E94923, and CSA file LR94903.

Associated Device

  • OldSurge ID: OS-0002
  • Product: Universal 71637
  • Manufacturer: Universal
  • Manufacturing Year: 1998
  • Country of Manufacture: China

Plug Characteristics

  • Plug Type: NEMA 5-15P
  • Plug Style: Straight Blade
  • Plug Manufacturer: YFC
  • Plug Model: SF-31
  • Plug UL File: E94923
  • Plug CSA File: LR94903

Notes

  • Utilizes a YFC SF-31 straight-blade grounding attachment plug.
  • Externally similar to attachment plugs documented on APC SurgeArrest Professional PRO7 examples.
  • Plug carries a different UL file number (E94923) than the APC examples documented to date.
  • Product incorporates both AC surge suppression and RJ11 telephone-line surge protection.

Belkin SurgeMaster F9H710-06 (OS-0003)

  • Belkin-branded NEMA 5-15P grounding attachment plug used on the SurgeMaster F9H710-06.
    Belkin-branded NEMA 5-15P grounding attachment plug used on the SurgeMaster F9H710-06.
  • Plug markings showing model CC-06 and UL file number E74196.
    Plug markings showing model CC-06 and UL file number E74196.

Associated Device

  • OldSurge ID: OS-0003
  • Product: Belkin SurgeMaster F9H710-06
  • Manufacturer: Belkin
  • Manufacturing Date: 1 November 2003
  • Country of Manufacture: China

Plug Characteristics

  • Plug Type: NEMA 5-15P
  • Plug Style: Straight Blade
  • Plug Branding: BELKIN
  • Plug Model: CC-06
  • Plug UL File: E74196

Notes

  • Plug body incorporates molded BELKIN branding.
  • One of the earliest branded attachment plugs currently documented by the OldSurge Archive.
  • Plug markings identify model CC-06 and UL file E74196.
  • Plug utilizes a molded straight-blade grounding configuration.

Staples 33895-US (OS-0004)

  • Right-angle NEMA 5-15P attachment plug used on the Staples 33895-US surge protector.
    Right-angle NEMA 5-15P attachment plug used on the Staples 33895-US surge protector.
  • Documented example in service. The right-angle plug routes upward when connected to a receptacle installed with the grounding slot in the upper position.
    Documented example in service. The right-angle plug routes upward when connected to a receptacle installed with the grounding slot in the upper position.

Associated Device

  • OldSurge ID: OS-0004
  • Product: Staples 33895-US
  • Manufacturer: Staples
  • Manufacturing Date: April 2011
  • Country of Manufacture: China

Plug Characteristics

  • Plug Type: NEMA 5-15P
  • Plug Style: Right-Angle
  • Grounded Attachment Plug
  • Plug Model: ME-30PL
  • Plug UL File: E143730

Notes

  • Utilizes a low-profile right-angle attachment plug intended to reduce clearance requirements behind furniture and office equipment.
  • Plug markings identify model ME-30PL and UL file E143730.
  • When connected to a receptacle installed in the modern grounding-pin-up orientation, the cord exits upward before bending downward toward the connected equipment.
  • The same plug design would route downward immediately when connected to a receptacle installed with the grounding slot below the energized conductors.

Amazon Basics 270103-B (OS-0005)

  • Molded NEMA 5-15P grounding plug and strain-relief assembly used on the Amazon Basics 270103-B surge protector.
    Molded NEMA 5-15P grounding plug and strain-relief assembly used on the Amazon Basics 270103-B surge protector.
  • Front view of the molded grounding plug showing blade and grounding-pin configuration.
    Front view of the molded grounding plug showing blade and grounding-pin configuration.

Associated Device

  • OldSurge ID: OS-0005
  • Product: Amazon Basics 270103-B Surge Protector
  • Manufacturer: Amazon Basics
  • Manufacturing Date: April 2026
  • Country of Manufacture: Vietnam

Plug Characteristics

  • Plug Type: NEMA 5-15P
  • Plug Style: Straight Blade
  • Grounded Attachment Plug
  • Manufacturer: Not Identified
  • Model: Not Identified
  • Certification Markings: Not Identified

Notes

  • The cord terminates in a molded straight-blade NEMA 5-15P grounding plug.
  • The plug does not appear to display a readily visible manufacturer name or UL file number in the documented photographs.
  • The associated cord is marked as manufactured by Kingtec (Vietnam) Technologies Co., Ltd.

Generic Model No. 2371, 0728, 2174 (OS-0006)

  • Grounded NEMA 5-15P attachment plug used on the unbranded Model No. 2371, 0728, 2174 relocatable power tap.
    Grounded NEMA 5-15P attachment plug used on the unbranded Model No. 2371, 0728, 2174 relocatable power tap.
  • Plug markings showing CWCO manufacturer identification, model CWI-03, and UL file number E168486.
    Plug markings showing CWCO manufacturer identification, model CWI-03, and UL file number E168486.

Associated Device

  • OldSurge ID: OS-0006
  • Product: Model No. 2371, 0728, 2174 Relocatable Power Tap
  • Brand: Unknown / Unbranded
  • Country of Manufacture: China

Plug Characteristics

  • Plug Type: NEMA 5-15P
  • Plug Manufacturer: CWCO
  • Plug Model: CWI-03
  • Plug UL File: E168486

Gemini Surge Model VG307 (OS-0007)

  • Grounded NEMA 5-15P attachment plug used on the Gemini Surge Model VG307 surge protector.
    Grounded NEMA 5-15P attachment plug used on the Gemini Surge Model VG307 surge protector.
  • Plug markings showing RHYTHM manufacturer identification and UL file number E91451.
    Plug markings showing RHYTHM manufacturer identification and UL file number E91451.

Associated Device

  • OldSurge ID: OS-0007
  • Product: Gemini Surge Model VG307
  • Manufacturer: Gemini
  • Estimated Manufacturing Period: 1990s
  • Country of Origin: China

Plug Characteristics

  • Plug Type: NEMA 5-15P
  • Plug Style: Straight Blade
  • Plug Manufacturer: RHYTHM
  • Plug Model: RP-?? (partially obscured)
  • Plug UL File: E91451

Notes

  • Plug markings identify RHYTHM as the attachment-plug manufacturer.
  • Plug model designation begins with "RP-" but the remaining characters are not fully legible in the documented photograph.
  • Plug UL file number E91451 is visible on the molded face of the plug body.
  • The documented example utilizes a straight-blade grounding attachment plug with a ribbed grip design.

APC SurgeArrest Professional PRO7 (OS-0008, 2017)

  • Right-angle NEMA 5-15P attachment plug used on the 2017 APC SurgeArrest Professional PRO7.
    Right-angle NEMA 5-15P attachment plug used on the 2017 APC SurgeArrest Professional PRO7.
  • Plug markings showing NEL manufacturer identification, model MEI-009C, and UL file number E56406.
    Plug markings showing NEL manufacturer identification, model MEI-009C, and UL file number E56406.

Associated Device

  • OldSurge ID: OS-0008
  • Product: APC SurgeArrest Professional PRO7
  • Manufacturer: APC
  • Serial Number: 7Z1714L05335
  • Manufacturing Year: 2017
  • Country of Origin: Philippines

Plug Characteristics

  • Plug Type: NEMA 5-15P
  • Plug Style: Right-Angle
  • Plug Manufacturer: NEL
  • Plug Model: MEI-009C
  • Plug UL File: E56406
  • Certification Marks:
    • UL
    • CSA

Notes

  • Utilizes a low-profile right-angle attachment plug.
  • Plug markings identify manufacturer NEL and model MEI-009C.
  • Plug carries UL file number E56406.
  • Cord exits toward the grounding-pin side of the plug body.
  • When connected to receptacles installed in the grounding-pin-up orientation, the cord initially routes upward before turning downward.
  • Represents the later Schneider Electric-era APC PRO7 plug design.

Universal 71632 (OS-0009)

  • Grounded NEMA 5-15P attachment plug and attached power cord used on the Universal 71632 surge protector.
    Grounded NEMA 5-15P attachment plug and attached power cord used on the Universal 71632 surge protector.
  • Plug markings showing YFC manufacturer identification, model SF-31, UL file E94923, and CSA file LR94903.
    Plug markings showing YFC manufacturer identification, model SF-31, UL file E94923, and CSA file LR94903.

Associated Device

  • OldSurge ID: OS-0009
  • Product: Universal 71632
  • Manufacturer: Universal
  • Manufacturing Year: 1998
  • Country of Manufacture: China

Plug Characteristics

  • Plug Type: NEMA 5-15P
  • Plug Style: Straight Blade
  • Plug Manufacturer: YFC
  • Plug Model: SF-31
  • Plug UL File: E94923
  • Plug CSA File: LR94903

Notes

  • Utilizes a YFC SF-31 straight-blade grounding attachment plug.
  • Plug markings and plug-body construction match those documented on the Universal 71637 (OS-0002).
  • Carries UL file E94923 and CSA file LR94903.
  • Represents a simpler companion product to the Universal 71637, omitting integrated telephone-line protection while retaining the same attachment-plug design.

Universal 71641 (OS-0010)

  • Right-angle NEMA 5-15P attachment plug and power cord used on the Universal 71641 surge protector.
    Right-angle NEMA 5-15P attachment plug and power cord used on the Universal 71641 surge protector.
  • Plug markings showing model ME-30L and UL file number E143730.
    Plug markings showing model ME-30L and UL file number E143730.

Associated Device

  • OldSurge ID: OS-0010
  • Product: Universal 71641
  • Manufacturer: Universal
  • Manufacturing Date: 23 May 2004
  • Country of Manufacture: China

Plug Characteristics

  • Plug Type: NEMA 5-15P
  • Plug Style: Right-Angle
  • Grounded Attachment Plug
  • Plug Model: ME-30L
  • Plug UL File: E143730

Notes

  • Utilizes a low-profile right-angle attachment plug.
  • Plug markings identify model ME-30L and UL file E143730.
  • Represents a significant design change from the YFC SF-31 straight-blade plugs documented on the Universal 71632 and 71637.
  • Similar plug family to the right-angle plug documented on the Staples 33895-US.

APC SurgeArrest Professional PRO7 (OS-0011, 2008)

  • Right-angle NEMA 5-15P attachment plug and associated power cord used on the 2008 APC SurgeArrest Professional PRO7.
    Right-angle NEMA 5-15P attachment plug and associated power cord used on the 2008 APC SurgeArrest Professional PRO7.
  • Plug markings showing NEL manufacturer identification, model MEI-009C, and UL file number E56406.
    Plug markings showing NEL manufacturer identification, model MEI-009C, and UL file number E56406.

Associated Device

  • OldSurge ID: OS-0011
  • Product: APC SurgeArrest Professional PRO7
  • Manufacturer: APC
  • Serial Number: 4Z0842P07546
  • Manufacturing Date: September 2008
  • Country of Origin: Philippines

Plug Characteristics

  • Plug Type: NEMA 5-15P
  • Plug Style: Right-Angle
  • Plug Manufacturer: NEL
  • Plug Model: MEI-009C
  • Plug UL File: E56406

Notes

  • Utilizes a low-profile right-angle attachment plug.
  • Plug markings identify manufacturer NEL and model MEI-009C.
  • Plug carries UL file number E56406.
  • The plug family appears identical to that documented on the archive's 2017 APC SurgeArrest Professional PRO7.
  • Cord exits toward the grounding-pin side of the plug body.
  • When connected to receptacles installed in the grounding-pin-up orientation, the cord initially routes upward before bending downward.

Yun YY-6CS (OS-0012)

  • Right-angle NEMA 5-15P attachment plug and attached power cord used on the Yun YY-6CS surge protector.
    Right-angle NEMA 5-15P attachment plug and attached power cord used on the Yun YY-6CS surge protector.
  • Heat-damaged attachment plug showing molded QIAOPU manufacturer markings and certification information.
    Heat-damaged attachment plug showing molded QIAOPU manufacturer markings and certification information.
  • Close-up of thermal discoloration, corrosion, and oxidation concentrated around one blade of the attachment plug.
    Close-up of thermal discoloration, corrosion, and oxidation concentrated around one blade of the attachment plug.

Associated Device

  • OldSurge ID: OS-0012
  • Product: Yun YY-6CS
  • Manufacturer: Yun
  • Manufacturing Date: July 2006
  • Country of Manufacture: China

Plug Characteristics

  • Plug Type: NEMA 5-15P
  • Plug Style: Right-Angle
  • Plug Manufacturer: QIAOPU
  • Plug Model: WP-53
  • Plug UL File: E232239

Notes

  • Plug markings identify QIAOPU as the attachment-plug manufacturer.
  • Plug model WP-53 and UL file E232239 remain legible despite substantial thermal damage.
  • The documented example exhibits severe discoloration, oxidation, and corrosion concentrated around one blade.
  • Green corrosion products are present adjacent to the affected blade.
  • Thermal damage is sufficiently severe to obscure portions of the molded markings and alter the original color of the plug body.
  • The attachment plug exhibits evidence of elevated temperatures during service but remained electrically intact when documented.
  • Unlike many documented examples, the same manufacturer appears to have supplied both the attachment plug and the power cord assembly.

Universal 71641 (OS-0013)

  • Right-angle NEMA 5-15P attachment plug and attached power cord used on the Universal 71641 surge protector.
    Right-angle NEMA 5-15P attachment plug and attached power cord used on the Universal 71641 surge protector.
  • Plug markings showing model ME-30L and UL file number E143730.
    Plug markings showing model ME-30L and UL file number E143730.

Associated Device

  • OldSurge ID: OS-0013
  • Product: Universal 71641
  • Manufacturer: Universal
  • Manufacturing Date: 23 May 2004
  • Country of Manufacture: China

Plug Characteristics

  • Plug Type: NEMA 5-15P
  • Plug Style: Right-Angle
  • Grounded Attachment Plug
  • Plug Model: ME-30L
  • Plug UL File: E143730

Notes

  • Utilizes a low-profile right-angle attachment plug.
  • Plug markings identify model ME-30L and UL file E143730.
  • Plug appears identical to the attachment plug documented on the archive's yellowed Universal 71641 example.
  • Despite sharing the same manufacturing date as the yellowed example, the documented specimen exhibits substantially less enclosure discoloration.
  • Provides a useful comparison illustrating differences in long-term aging among otherwise identical products.

CyberPower P704URC1 (OS-0014)

  • Low-profile right-angle NEMA 5-15P attachment plug showing ETL certification markings, control number 3139160, and KT-G plug marking.
    Low-profile right-angle NEMA 5-15P attachment plug showing ETL certification markings, control number 3139160, and KT-G plug marking.
  • Attachment plug with factory-installed protective blade cap supplied with the documented example.
    Attachment plug with factory-installed protective blade cap supplied with the documented example.

Associated Device

  • OldSurge ID: OS-0014
  • Product: CyberPower P704URC1
  • Manufacturer: CyberPower
  • Condition: New
  • Country of Manufacture: Vietnam

Plug Characteristics

  • Plug Type: NEMA 5-15P
  • Plug Style: Right-Angle
  • Grounded Attachment Plug
  • Plug Marking: KT-G
  • Certification Agency: Intertek (ETL Listed)
  • ETL Control Number: 3139160

Notes

  • Utilizes a low-profile right-angle attachment plug intended to reduce clearance requirements behind furniture and equipment.
  • Plug markings include ETL Listed certification, control number 3139160, and molded KT-G identification.
  • A removable protective cap was installed over the plug blades when received from the manufacturer.
  • The plug appears consistent with the Kingtec-manufactured cord assembly used on the documented example.
  • Represents a modern Vietnam-manufactured plug design incorporating ETL certification rather than traditional UL file markings.

APC SurgeArrest Professional PRO7 (OS-0015, 1998)

  • Right-angle NEMA 5-15P attachment plug and attached power cord used on the 1998 APC SurgeArrest Professional PRO7.
    Right-angle NEMA 5-15P attachment plug and attached power cord used on the 1998 APC SurgeArrest Professional PRO7.
  • Plug markings showing NEL manufacturer identification, model MEI-009C, and UL file number E56406.
    Plug markings showing NEL manufacturer identification, model MEI-009C, and UL file number E56406.
  • Right-angle plug installed in a receptacle with the grounding contact below the energized conductors, allowing the cord to exit naturally downward as intended by the plug design.
    Right-angle plug installed in a receptacle with the grounding contact below the energized conductors, allowing the cord to exit naturally downward as intended by the plug design.

Associated Device

  • OldSurge ID: OS-0015
  • Product: APC SurgeArrest Professional PRO7
  • Manufacturer: APC
  • Serial Number: Z98010201706
  • Manufacturing Year: 1998
  • Country of Origin: China

Plug Characteristics

  • Plug Type: NEMA 5-15P
  • Plug Style: Right-Angle
  • Plug Manufacturer: NEL
  • Plug Model: MEI-009C
  • Plug UL File: E56406

Notes

  • Utilizes a low-profile right-angle attachment plug.
  • Plug markings identify manufacturer NEL and model MEI-009C.
  • Plug carries UL file number E56406.
  • Represents the earliest documented APC PRO7 currently known to utilize the NEL MEI-009C attachment-plug family.
  • The plug routes the cord downward when connected to receptacles installed with the grounding contact below the energized conductors, a common installation orientation during the period.
  • When connected to modern grounding-pin-up receptacles, the same plug routes the cord upward before turning downward.

Radio Shack 61-2140 (OS-0016)

  • Grounded NEMA 5-15P attachment plug and attached power cord used on the Radio Shack 61-2140 Appliance Surge Protector.
    Grounded NEMA 5-15P attachment plug and attached power cord used on the Radio Shack 61-2140 Appliance Surge Protector.
  • Plug markings showing FC manufacturer identification, model SF-31, UL file E91923, and CSA file LR62202.
    Plug markings showing FC manufacturer identification, model SF-31, UL file E91923, and CSA file LR62202.

Associated Device

  • OldSurge ID: OS-0016
  • Product: Radio Shack 61-2140 Appliance Surge Protector
  • Manufacturer: Radio Shack
  • Country of Origin: Assembled in Mexico

Plug Characteristics

  • Plug Type: NEMA 5-15P
  • Plug Style: Straight Blade
  • Plug Manufacturer: FC
  • Plug Model: SF-31
  • Plug UL File: E91923
  • Plug CSA File: LR62202

Notes

  • Utilizes a straight-blade grounding attachment plug.
  • Plug markings identify manufacturer FC and model SF-31.
  • Plug carries UL file E91923 and CSA file LR62202.
  • Plug body incorporates molded textured grip surfaces similar to several other late-1990s and early-2000s attachment plugs documented by the OldSurge Archive.
  • The documented example remained non-functional at the time of testing despite no obvious catastrophic damage being observed during teardown.

APC SurgeArrest Professional PRO7 (OS-0017, 2002)

  • APC-branded right-angle NEMA 5-15P attachment plug and attached power cord used on the December 2002 APC SurgeArrest Professional PRO7.
    APC-branded right-angle NEMA 5-15P attachment plug and attached power cord used on the December 2002 APC SurgeArrest Professional PRO7.
  • Plug markings showing AAM01 manufacturer identification and UL file number E227089.
    Plug markings showing AAM01 manufacturer identification and UL file number E227089.
  • Rear view of the attachment plug showing molded APC branding.
    Rear view of the attachment plug showing molded APC branding.
  • APC-branded attachment plug installed in a receptacle with the grounding contact below the energized conductors, allowing the cord to exit naturally downward.
    APC-branded attachment plug installed in a receptacle with the grounding contact below the energized conductors, allowing the cord to exit naturally downward.

Associated Device

  • OldSurge ID: OS-0017
  • Product: APC SurgeArrest Professional PRO7
  • Manufacturer: APC
  • Serial Number: 2Z0250P17876
  • Manufacturing Date: December 2002
  • Country of Origin: China

Plug Characteristics

  • Plug Type: NEMA 5-15P
  • Plug Style: Right-Angle
  • Plug Manufacturer Marking: AAM01
  • Plug UL File: E227089
  • Plug Branding: APC

Notes

  • Utilizes a right-angle grounding attachment plug incorporating molded APC branding on the rear surface of the plug body.
  • Plug markings identify AAM01 and UL file number E227089.
  • The documented example is the only APC PRO7 currently documented by the OldSurge Archive that incorporates APC branding directly into the attachment plug.
  • Represents a transitional design between the early straight-blade YFC-equipped PRO7 examples and the later NEL MEI-009C right-angle plug family.
  • When connected to a receptacle installed with the grounding contact below the energized conductors, the cord exits naturally downward, illustrating the original intent of the plug design.
  • When connected to a receptacle installed with the grounding contact above the energized conductors, the same plug routes the cord upward before bending downward.

ACE 33543 (OS-0018)

  • Grounded NEMA 5-15P attachment plug used on the ACE 33543 relocatable power tap. Plug marked "QS", model "CC-002", and UL file E74779.
    Grounded NEMA 5-15P attachment plug used on the ACE 33543 relocatable power tap. Plug marked "QS", model "CC-002", and UL file E74779.
  • Overall view of the plug and attached power cord. The ACE 33543 was manufactured on 2 June 2009 and utilizes a three-conductor SJT power cord rated 300V, 60°C.
    Overall view of the plug and attached power cord. The ACE 33543 was manufactured on 2 June 2009 and utilizes a three-conductor SJT power cord rated 300V, 60°C.

Associated Device

  • OldSurge ID: OS-0018
  • Product: ACE 33543 Relocatable Power Tap
  • Manufacturer: ACE
  • Manufacturing Date: 2 June 2009

Plug Characteristics

  • Plug Type: NEMA 5-15P
  • Plug Model: CC-002
  • Plug Manufacturer Marking: QS
  • Plug UL File: E74779

APC SurgeArrest Professional PRO7 (OS-0019, 1994)

  • Straight-blade NEMA 5-15P attachment plug and associated power cord used on the 1994 APC SurgeArrest Professional PRO7.
    Straight-blade NEMA 5-15P attachment plug and associated power cord used on the 1994 APC SurgeArrest Professional PRO7.
  • Plug markings showing YFC manufacturer identification, model SF-31, and approval markings including UL file E94929.
    Plug markings showing YFC manufacturer identification, model SF-31, and approval markings including UL file E94929.

Associated Device

  • OldSurge ID: OS-0019
  • Product: APC SurgeArrest Professional PRO7
  • Manufacturer: APC (American Power Conversion)
  • Serial Number: Z94030204087
  • Manufacturing Year: 1994
  • Country of Manufacture: China

Plug Characteristics

  • Plug Manufacturer: YFC
  • Plug Model: SF-31
  • Plug UL File: E94929
  • Plug CSA File: LR62202

Notes

  • Earliest APC PRO7 currently documented by the OldSurge Archive.
  • Only documented APC PRO7 currently known to utilize a straight-blade attachment plug.
  • Later documented APC PRO7 examples utilize right-angle attachment plugs.
  • Plug and cord assembly combines a YFC SF-31 attachment plug with a Bon-Eagle-manufactured power cord.

Curtis SP-600 (OS-0020)

  • Rear view showing the dual-plug wall-mount arrangement used to support the Curtis SP-600 without an attached power cord.
    Rear view showing the dual-plug wall-mount arrangement used to support the Curtis SP-600 without an attached power cord.
  • Direct-plug assembly, certification markings, and model information molded into the rear housing.
    Direct-plug assembly, certification markings, and model information molded into the rear housing.
  • Curtis SP-600 connected directly to a duplex receptacle during functional testing.
    Curtis SP-600 connected directly to a duplex receptacle during functional testing.

Associated Device

  • OldSurge ID: OS-0020
  • Product: Curtis SP-600
  • Manufacturer: Curtis
  • Product Type: Wall-Mounted Surge Protector
  • Country of Manufacture: China

Plug Characteristics

  • Plug Type: Dual NEMA 5-15P Assemblies
  • Plug Style: Direct Plug
  • Grounded Attachment Plugs: 2
  • Cord: None
  • Mounting Method: Occupies both receptacles of a standard duplex outlet
  • UL File: E93801
  • CSA File: LR83974

Notes

  • Direct-plug wall-mounted surge protector incorporating two complete grounded plug assemblies.
  • Unlike most modern wall-mounted surge protectors, the SP-600 does not utilize the center faceplate-retention screw.
  • Mechanical retention is provided entirely by the two grounded plug assemblies.
  • Represents the first wall-mounted surge protector documented by the OldSurge Archive.
  • Demonstrates an alternative approach to power distribution that eliminates the need for an attached cord and conventional attachment plug.
  • Integrated coaxial surge protection utilizes F-type IN and OUT connectors.

APC SurgeArrest Professional PRO7 (OS-0021, 1999)

  • APC-branded right-angle NEMA 5-15P attachment plug and attached six-foot power cord used on the August 1999 APC SurgeArrest Professional PRO7.
    APC-branded right-angle NEMA 5-15P attachment plug and attached six-foot power cord used on the August 1999 APC SurgeArrest Professional PRO7.
  • Plug markings showing APC branding, additional approval markings, and UL file number E173251.
    Plug markings showing APC branding, additional approval markings, and UL file number E173251.
  • Rear view of the attachment plug showing molded APC branding.
    Rear view of the attachment plug showing molded APC branding.
  • Close-up view of the APC-branded right-angle plug installed in a wall receptacle.
    Close-up view of the APC-branded right-angle plug installed in a wall receptacle.
  • APC-branded attachment plug connected to a grounding-pin-down receptacle, illustrating the intended downward cord-routing behavior of the design.
    APC-branded attachment plug connected to a grounding-pin-down receptacle, illustrating the intended downward cord-routing behavior of the design.

Associated Device

  • OldSurge ID: OS-0021
  • Product: APC SurgeArrest Professional PRO7
  • Manufacturer: APC (American Power Conversion)
  • Serial Number: Z99080215662
  • Manufacturing Date: August 1999
  • Country of Origin: China

Plug Characteristics

  • Plug Type: NEMA 5-15P
  • Plug Style: Right-Angle
  • Plug Branding: APC
  • Plug Manufacturer Marking: AAM01
  • Plug UL File: E173251

Notes

  • Utilizes a right-angle grounding attachment plug incorporating molded APC branding on the rear surface of the plug body.
  • Plug markings identify AAM01 and UL file number E173251.
  • Represents the earliest APC-branded attachment plug currently documented by the OldSurge Archive.
  • The attachment plug differs from the unbranded NEL MEI-009C plug family documented on the archive's 1998, 2008, and 2017 APC PRO7 specimens.
  • When connected to a receptacle installed with the grounding contact

S.L. Waber 952M (OS-0022)

  • Overall view of the attached power cord and molded NEMA 5-15P grounding plug used on the S.L. Waber 952M relocatable power tap.
    Overall view of the attached power cord and molded NEMA 5-15P grounding plug used on the S.L. Waber 952M relocatable power tap.
  • Close-up view of the molded grounding plug assembly.
    Close-up view of the molded grounding plug assembly.

Associated Device

  • OldSurge ID: OS-0022
  • Product: S.L. Waber 952M Relocatable Power Tap
  • Manufacturer: S.L. Waber
  • Integrated System: Herman Miller Energy Distribution System
  • Herman Miller Model: EK410 / PK410
  • Part Number: XUL603-038A
  • Country of Origin: Assembled in Mexico

Plug Characteristics

  • Plug Type: NEMA 5-15P
  • Plug Style: Straight Blade
  • Grounded Attachment Plug
  • Manufacturer: Not Identified

Notes

  • Commercial office-furniture power-distribution product supplied as part of the Herman Miller Energy Distribution System.
  • Cord certification identifiers match examples associated with Bon-Eagle-manufactured cord assemblies documented elsewhere in the OldSurge Archive.
  • No manufacturer markings or certification numbers have yet been identified on the attachment plug itself.

APC SurgeArrest Professional PRO7 (OS-0023, 1996)

  • Straight-blade NEMA 5-15P attachment plug and Bon-Eagle power-cord assembly used on the 1996 APC SurgeArrest Professional PRO7.
    Straight-blade NEMA 5-15P attachment plug and Bon-Eagle power-cord assembly used on the 1996 APC SurgeArrest Professional PRO7.
  • Plug markings showing YFC manufacturer identification, model SP-31, and UL file number E94929.
    Plug markings showing YFC manufacturer identification, model SP-31, and UL file number E94929.

Associated Device

  • OldSurge ID: OS-0023
  • Product: APC SurgeArrest Professional PRO7
  • Manufacturer: APC (American Power Conversion)
  • Serial Number: Z96030204796
  • Manufacturing Year: 1996
  • Country of Manufacture: China

Plug Characteristics

  • Plug Type: NEMA 5-15P
  • Plug Style: Straight-Blade
  • Plug Manufacturer: YFC
  • Plug Model: SP-31
  • Plug UL File: E94929

Notes

  • Utilizes a YFC SP-31 straight-blade grounding attachment plug.
  • Plug carries the same UL file number, E94929, observed on the documented 1994 APC PRO7 example.
  • Bon-Eagle-manufactured cord assembly identified by UL file E135710.
  • Represents a transitional APC PRO7 specimen produced between the documented 1994 and 1998 generations.

PowerSentry Model 626 (OS-0024)

  • Straight-blade NEMA 5-15P attachment plug and attached power cord used on the PowerSentry Model 626 surge protector.
    Straight-blade NEMA 5-15P attachment plug and attached power cord used on the PowerSentry Model 626 surge protector.
  • Plug markings showing model ME-301H, UL file E143780SP, and CSA file LR98180.
    Plug markings showing model ME-301H, UL file E143780SP, and CSA file LR98180.
  • Integrated cord-retention clip molded into the attachment-plug body.
    Integrated cord-retention clip molded into the attachment-plug body.

Associated Device

  • OldSurge ID: OS-0024
  • Product: PowerSentry Model 626
  • Manufacturer: PowerSentry
  • Manufacturing Date: 20 October 2002
  • Country of Origin: China

Plug Characteristics

  • Plug Type: NEMA 5-15P
  • Plug Style: Straight Blade
  • Plug Model: ME-301H
  • Plug UL File: E143780SP
  • Plug CSA File: LR98180
  • Integrated Cord-Retention Clip: Yes

Notes

  • Utilizes a straight-blade grounding attachment plug incorporating an integrated cord-retention clip.
  • Plug markings identify model ME-301H, UL file E143780SP, and CSA file LR98180.
  • The integrated retention clip engages molded cord-storage guides built into the surge-protector enclosure.
  • Represents the first plug-mounted cord-retention system documented by the OldSurge Archive.
  • Forms part of a complete cord-management system consisting of enclosure-mounted cord guides and a retention feature built directly into the attachment plug.
  • Unlike the APC PRO7 examples manufactured during the same period, the PowerSentry utilizes a straight-blade plug despite being a contemporary seven-outlet surge protector.

APC SurgeArrest Professional PRO7 (OS-0025, 2006)

  • Right-angle NEMA 5-15P attachment plug and attached Chung Kwang-manufactured power cord used on the June 2006 APC SurgeArrest Professional PRO7.
    Right-angle NEMA 5-15P attachment plug and attached Chung Kwang-manufactured power cord used on the June 2006 APC SurgeArrest Professional PRO7.
  • Plug markings showing NEL manufacturer identification, model ME-009C, and UL file number E56406.
    Plug markings showing NEL manufacturer identification, model ME-009C, and UL file number E56406.
  • Rear view of the attachment plug showing the absence of APC branding.
    Rear view of the attachment plug showing the absence of APC branding.

Associated Device

  • OldSurge ID: OS-0025
  • Product: APC SurgeArrest Professional PRO7
  • Manufacturer: APC
  • Serial Number: 4Z0638P12907
  • Manufacturing Date: June 2006
  • Country of Origin: Philippines

Plug Characteristics

  • Plug Type: NEMA 5-15P
  • Plug Style: Right-Angle
  • Plug Manufacturer: NEL
  • Plug Model: ME-009C
  • Plug UL File: E56406

Notes

  • Utilizes a right-angle grounding attachment plug manufactured by NEL.
  • Plug markings identify model ME-009C and UL file number E56406.
  • Unlike the archive's documented 1999 and 2002 APC PRO7 specimens, the plug does not incorporate molded APC branding.
  • The plug family matches that documented on the archive's 1998, 2008, and 2017 APC PRO7 examples.
  • Represents APC's return to the NEL ME-009C plug family following the APC-branded plug generation documented in 1999 and 2002.
  • The plug is attached to a Chung Kwang-manufactured SJT 14/3 power cord carrying UL file number E54024 and CSA file number LL65965.

Globe Electric 12-003-7MS (OS-0026)

  • Rear view showing the direct-plug attachment assembly, stabilizing pin, date wheels, UL label, and rotating outlet-bank construction.
    Rear view showing the direct-plug attachment assembly, stabilizing pin, date wheels, UL label, and rotating outlet-bank construction.
  • Direct-plug assembly and molded product markings identifying model 12-003-7MS and item number 7791301.
    Direct-plug assembly and molded product markings identifying model 12-003-7MS and item number 7791301.
  • Globe Electric 12-003-7MS connected to utility power with SURGE and GROUND indicators illuminated.
    Globe Electric 12-003-7MS connected to utility power with SURGE and GROUND indicators illuminated.

Associated Device

  • OldSurge ID: OS-0026
  • Product: Globe Electric 12-003-7MS
  • Manufacturer: Globe Electric
  • Product Family: Space Plug
  • Manufacturing Date: April 2014
  • Country of Manufacture: China

Plug Characteristics

  • Plug Type: Direct Plug
  • Plug Configuration: NEMA 5-15P
  • Grounded Attachment Plug: 1
  • Stabilizing Pin: Yes
  • Cord: None
  • Faceplate-Retention Screw: No
  • Mounting Method: Direct-plug wall-tap design

Notes

  • Direct-plug wall-mounted surge protector incorporating a single grounded NEMA 5-15P plug and a non-conductive stabilizing pin.
  • Unlike most modern wall-mounted surge protectors, the unit does not utilize the receptacle faceplate-retention screw.
  • Mechanical support is provided by the attachment plug together with the adjacent stabilizing pin.
  • Rotating outlet banks allow connected power cords to be routed parallel to the wall surface.
  • Represents a later-generation wall-tap design emphasizing outlet flexibility and integrated USB charging rather than communications-line protection.
  • One of only two direct-plug surge protectors currently documented by the OldSurge Archive, together with the Curtis SP-600.

APC SurgeArrest Professional PRO7 (OS-0027, 2015)

  • Right-angle NEMA 5-15P attachment plug and attached I-SHENG-manufactured power cord used on the 2015 APC SurgeArrest Professional PRO7.
    Right-angle NEMA 5-15P attachment plug and attached I-SHENG-manufactured power cord used on the 2015 APC SurgeArrest Professional PRO7.
  • Plug markings showing NEL manufacturer identification, model MEI-009C, and UL file number E58406.
    Plug markings showing NEL manufacturer identification, model MEI-009C, and UL file number E58406.
  • Rear view of the attachment plug showing the absence of APC branding.
    Rear view of the attachment plug showing the absence of APC branding.

Associated Device

  • OldSurge ID: OS-0027
  • Product: APC SurgeArrest Professional PRO7
  • Manufacturer: APC
  • Serial Number: 7Z1550L09782
  • Manufacturing Date: 2015
  • Country of Origin: Philippines

Plug Characteristics

  • Plug Type: NEMA 5-15P
  • Plug Style: Right-Angle
  • Plug Manufacturer: NEL
  • Plug Model: MEI-009C
  • Plug UL File: E58406

Notes

  • Utilizes a right-angle grounding attachment plug manufactured by NEL.
  • Plug markings identify model MEI-009C and UL file number E58406.
  • The plug body does not incorporate APC branding.
  • Plug configuration matches the attachment-plug family documented on the archive's 2006, 2008, and 2017 APC PRO7 specimens.
  • Represents a late-production APC PRO7 example manufactured immediately prior to the archive's documented 2017 specimen.
  • Attached to an I-SHENG-manufactured SJT 14/3 power cord.

COXOC CO-001S (OS-0028)

  • Straight-blade NEMA 5-15P attachment plug and attached Apollo-manufactured power cord used on the COXOC CO-001S surge protector.
    Straight-blade NEMA 5-15P attachment plug and attached Apollo-manufactured power cord used on the COXOC CO-001S surge protector.
  • Plug markings showing model COX-01, UL file E147517, CSA certification marking, and evidence of previous heat exposure.
    Plug markings showing model COX-01, UL file E147517, CSA certification marking, and evidence of previous heat exposure.
  • Molded COXOC logo incorporated into the attachment-plug body.
    Molded COXOC logo incorporated into the attachment-plug body.
  • Rear view showing the molded COXOC logo and discoloration near the current-carrying blades.
    Rear view showing the molded COXOC logo and discoloration near the current-carrying blades.
  • Documented example photographed in its final service location prior to retirement and archival documentation.
    Documented example photographed in its final service location prior to retirement and archival documentation.

Associated Device

  • OldSurge ID: OS-0028
  • Product: COXOC CO-001S
  • Manufacturer: COXOC
  • Manufacturing Date: 1990s (estimated)
  • Country of Origin: China

Plug Characteristics

  • Plug Type: NEMA 5-15P
  • Plug Style: Straight Blade
  • Plug Branding: COXOC
  • Plug Model: COX-01
  • Plug UL File: E147517
  • Certification Marks:
    • CSA

Notes

  • Plug markings identify model COX-01 and UL file number E147517.
  • Plug incorporates molded COXOC branding on the body and represents the only prominent external COXOC branding identified on the documented artifact.
  • The attachment plug provided the evidence necessary to positively identify the manufacturer of the surge protector.
  • Localized discoloration is present adjacent to both current-carrying blades.
  • Minor separation is visible between the blade assemblies and the surrounding molded plastic body.
  • The observed condition is consistent with previous exposure to elevated temperatures at the plug-to-receptacle interface.
  • A second documented COXOC CO-001S example does not exhibit comparable discoloration or blade separation, suggesting that the condition is specific to the documented specimen rather than an inherent characteristic of the product design.
  • Provides one of the clearest examples in the OldSurge Archive of a plug exhibiting both identifiable manufacturer branding and visible evidence of long-term thermal stress.

APC SurgeArrest Personal PER7T (OS-0029, 1998)

  • Straight-blade NEMA 5-15P attachment plug and attached HRSA-manufactured power cord used on the APC SurgeArrest Personal PER7T.
    Straight-blade NEMA 5-15P attachment plug and attached HRSA-manufactured power cord used on the APC SurgeArrest Personal PER7T.
  • Plug markings showing UL file number E173291 together with grounding-pin wear accumulated during long-term service.
    Plug markings showing UL file number E173291 together with grounding-pin wear accumulated during long-term service.

Associated Device

  • OldSurge ID: OS-0029
  • Product: APC SurgeArrest Personal PER7T
  • Manufacturer: APC (American Power Conversion)
  • Product Family: SurgeArrest Personal
  • Serial Number: Z98010214399
  • Manufacturing Date: 1998
  • Country of Origin: China

Plug Characteristics

  • Plug Type: NEMA 5-15P
  • Plug Style: Straight Blade
  • Grounded Attachment Plug
  • Plug UL File: E173291

Notes

  • Utilizes a molded straight-blade grounding attachment plug.
  • Plug markings identify UL file number E173291.
  • Moderate wear is visible on the grounding pin, consistent with repeated insertion and removal during service life.
  • Differs from the archive's contemporary 1998 APC SurgeArrest Professional PRO7 specimen, which utilizes a right-angle attachment plug.
  • Demonstrates that APC employed different plug designs within the Personal and Professional SurgeArrest product families despite substantial similarities in enclosure architecture and protection ratings.
  • Attached to an HRSA-manufactured SJT 14/3 power cord carrying UL file number E69167 and CSA file number LL52902.

COXOC CO-001S Variant (OS-0030)

  • Molded straight-blade NEMA 5-15P attachment plug and shortened COXOC-branded power-cord assembly used on COXOC CO-001S Variant (OS-0030).
    Molded straight-blade NEMA 5-15P attachment plug and shortened COXOC-branded power-cord assembly used on COXOC CO-001S Variant (OS-0030).
  • Rear of the attachment plug showing molded COXOC branding.
    Rear of the attachment plug showing molded COXOC branding.
  • Close-up view of the molded COXOC logo incorporated into the plug body.
    Close-up view of the molded COXOC logo incorporated into the plug body.
  • Plug-face markings showing model COX-01, UL file number E147517, CSA certification marking, and intact blade retention.
    Plug-face markings showing model COX-01, UL file number E147517, CSA certification marking, and intact blade retention.

Associated Device

  • OldSurge ID: OS-0030
  • Product: COXOC CO-001S Variant
  • Manufacturer: COXOC
  • Manufacturing Date: 1990s (estimated)
  • Country of Origin: China

Plug Characteristics

  • Plug Type: NEMA 5-15P
  • Plug Style: Straight Blade
  • Plug Branding: COXOC
  • Plug Model: COX-01
  • Plug UL File: E147517
  • Certification Marks:
    • CSA

Notes

  • Attachment plug incorporates molded COXOC branding identical to that documented on COXOC CO-001S (OS-0028).
  • Plug markings identify model COX-01 and UL file number E147517.
  • Plug exhibits no significant discoloration, deformation, or heat-related damage.
  • Blade retention remains intact with no visible separation between the metal blade assemblies and surrounding molded plastic body.
  • Provides a useful comparison with COXOC CO-001S (OS-0028), whose attachment plug exhibits localized heat discoloration and partial blade separation.
  • Supports the conclusion that the damage documented on OS-0028 was likely the result of that specimen's individual service history rather than an inherent characteristic of the COX-01 plug design.
  • Demonstrates that COXOC retained the same attachment-plug design despite utilizing a different cord assembly than the archive's previously documented COXOC CO-001S specimen.

APC SurgeArrest Personal PER7T (OS-0031, 2021)

  • Straight-blade NEMA 5-15P attachment plug and attached Well Shin-manufactured power cord supplied with the 2021 APC SurgeArrest Personal PER7T recall-replacement unit.
    Straight-blade NEMA 5-15P attachment plug and attached Well Shin-manufactured power cord supplied with the 2021 APC SurgeArrest Personal PER7T recall-replacement unit.
  • Plug-face markings showing model information, certification markings, and UL file number E138382.
    Plug-face markings showing model information, certification markings, and UL file number E138382.
  • Rear surface of the attachment plug showing molded manufacturing-code wheels incorporated into the plug body.
    Rear surface of the attachment plug showing molded manufacturing-code wheels incorporated into the plug body.
  • Close-up view of the molded manufacturing-code wheels indicating apparent manufacture during November 2020.
    Close-up view of the molded manufacturing-code wheels indicating apparent manufacture during November 2020.

Associated Device

  • OldSurge ID: OS-0031
  • Product: APC SurgeArrest Personal PER7T
  • Manufacturer: APC by Schneider Electric
  • Product Family: SurgeArrest Personal
  • Serial Number: 7Z2102L08233
  • Manufacturing Date: January 2021
  • Country of Origin: Philippines

Plug Characteristics

  • Plug Type: NEMA 5-15P
  • Plug Style: Straight Blade
  • Plug Manufacturer: Well Shin
  • Plug Model: WS-003? (partially obscured)
  • Plug UL File: E138382
  • Molded Manufacturing-Code Wheels: Present

Notes

  • Utilizes a molded straight-blade grounding attachment plug manufactured by Well Shin.
  • Plug-face markings identify UL file number E138382.
  • Rear surface incorporates molded manufacturing-code wheels not present on earlier APC PER7T examples documented by the archive.
  • Date-code wheel markings appear consistent with November 2020 manufacture of the plug assembly.
  • Plug date codes correspond closely with molded enclosure date wheels documenting November 2020 manufacture of the enclosure components.
  • The plug-manufacturing date predates the documented factory quality-assurance record dated 2021-01-16, supporting the overall production chronology of the replacement unit.
  • The date-code wheels are believed to originate from the plug manufacturer rather than APC and likely served purposes including mold traceability, production tracking, and quality control.
  • Represents the most comprehensively documented attachment-plug chronology currently preserved within the OldSurge Archive, with independently documented plug, enclosure, factory-test, and product-level manufacturing records.
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