Gemini Surge Model VG307 - Revision history

PowerPig at 03:22, 14 October 2026

2026-10-14T03:22:27Z

← Older revision		Revision as of 03:22, 14 October 2026
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	** Type: SJT		** Type: SJT
	** Conductors: 3		** Conductors: 3
	** Wire Size: 16 AWG		** Wire Size: 14 AWG
	** UL Temperature Rating: 75°C		** UL Temperature Rating: 75°C
	** CSA Temperature Rating: 60°C		** CSA Temperature Rating: 60°C
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	A resettable push-button circuit breaker is located adjacent to the power-cord entry point.		A resettable push-button circuit breaker is located adjacent to the power-cord entry point.

	The attached power cord measures approximately four feet (1.2 m) in length and utilizes Rhythm-manufactured SJT cable marked UL file number E88231 and CSA file number LL54008. Cord markings identify the cable as a three-conductor 16 AWG assembly rated for 75°C under UL standards and 60°C under CSA standards~~. The cord terminates in a molded grounded attachment plug bearing Rhythm markings~~.		The attached power cord measures approximately four feet (1.2 m) in length and utilizes Rhythm-manufactured SJT cable marked UL file number E88231 and CSA file number LL54008. Cord markings identify the cable as a three-conductor 14 AWG assembly rated for 75°C under UL standards and 60°C under CSA standards.

	The VG307 utilizes a grounded three-prong molded attachment plug permanently affixed to the power cord.		The VG307 utilizes a grounded three-prong molded attachment plug permanently affixed to the power cord.

PowerPig at 14:28, 13 October 2026

2026-10-13T14:28:51Z

← Older revision		Revision as of 14:28, 13 October 2026
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	[[File:surge_Gemini_VG307_main_01.jpg\|thumb\|center\|400px\|Overall view of the Gemini Surge Model VG307.]]		[[File:surge_Gemini_VG307_main_01.jpg\|thumb\|center\|400px\|Overall view of the Gemini Surge Model VG307.]]

			== Documented Example ==

			* OldSurge ID: OS-0007
			* Estimated Manufacturing Period: 1990s

	== Specifications ==		== Specifications ==
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	* Maximum Load: 15A, 120VAC, 60Hz		* Maximum Load: 15A, 120VAC, 60Hz
	* Maximum Suppression: 500V		* Maximum Suppression: 500V
	* Power Cord Length: Approximately 4 ft (1.2 m)		* Power Cord:
	* ~~Power Cord~~ Type: SJT		** Length: Approximately 4 ft (1.2 m)
	* Conductors: 16 AWG ~~× 3~~		** Type: SJT
	* ~~Cord~~ Temperature Rating: 75°C		** Conductors: 3
			** Wire Size: 16 AWG
			** UL Temperature Rating: 75°C
			** CSA Temperature Rating: 60°C
			** Flame Rating: FT2 (CSA)
			** Manufacturer: Rhythm
			** UL File Number: E88231
			** CSA File Number: LL54008
	* Length: Approximately 12.25 in (31.1 cm)		* Length: Approximately 12.25 in (31.1 cm)
	* Width: Approximately 2.19 in (5.6 cm)		* Width: Approximately 2.19 in (5.6 cm)
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	A resettable push-button circuit breaker is located adjacent to the power-cord entry point.		A resettable push-button circuit breaker is located adjacent to the power-cord entry point.

	The attached power cord measures approximately 4 feet (1.2 m) in length and utilizes an SJT~~-rated jacket with three 16 AWG conductors~~. Cord markings ~~indicate~~ a 75°C ~~temperature rating~~ and ~~identify the~~ cord ~~manufacturer as~~ Rhythm.		The attached power cord measures approximately four feet (1.2 m) in length and utilizes Rhythm-manufactured SJT cable marked UL file number E88231 and CSA file number LL54008. Cord markings identify the cable as a three-conductor 16 AWG assembly rated for 75°C under UL standards and 60°C under CSA standards. The cord terminates in a molded grounded attachment plug bearing Rhythm markings.

	The VG307 utilizes a grounded three-prong molded attachment plug permanently affixed to the power cord.		The VG307 utilizes a grounded three-prong molded attachment plug permanently affixed to the power cord.
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	== Testing ==		== Testing ==

	The documented example was tested for basic electrical operation and wiring integrity.		The documented example was tested for basic electrical operation and wiring integrity. A receptacle tester confirmed correct outlet wiring and grounding, and the rocker switch successfully controlled power to all outlets. Although the red rocker switch resembles an illuminated switch commonly used on surge protectors of the period, no illumination was observed during testing.

	A receptacle tester ~~indicated~~ correct ~~hot, neutral~~, and ~~ground wiring throughout~~ the ~~surge protector. The tester reported normal wiring with no open ground, open neutral, reversed polarity, or other wiring faults detected.~~

	~~The~~ rocker switch successfully controlled power to all outlets. ~~The surge protector supplied power when switched on and disconnected power when switched off.~~

	Although the red rocker switch resembles an illuminated switch, no illumination was observed during testing.

	<gallery mode="packed" heights="250">		<gallery mode="packed" heights="250">
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	</gallery>		</gallery>

	~~== Operational Notes ==~~

	~~The documented example powers connected devices normally.~~

	~~While the rocker switch resembles an illuminated switch, no illumination is present on the documented example during operation.~~

	~~== Documented Example ==~~

	* OldSurge ID: OS-0007
	* Estimated Manufacturing Period: 1990s

	== See Also ==		== See Also ==

PowerPig at 11:27, 10 October 2026

2026-10-10T11:27:05Z

← Older revision		Revision as of 11:27, 10 October 2026
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	~~= Gemini Surge Model VG307 =~~

	~~[[File:surge_Gemini_VG307_main_01.jpg\|thumb\|center\|400px\|Overall view of the Gemini Surge Model VG307.]]~~

	~~== Overview ==~~

	The '''Gemini Surge Model VG307''' is a seven-outlet surge protector manufactured by Gemini.		The '''Gemini Surge Model VG307''' is a seven-outlet surge protector manufactured by Gemini.

	The documented example features seven grounded outlets, a four-foot power cord, and a red rocker-style power switch. The unit is finished in a beige plastic enclosure typical of consumer surge protectors from the 1990s.		The documented example features seven grounded outlets, a four-foot power cord, and a red rocker-style power switch. The unit is finished in a beige plastic enclosure typical of consumer surge protectors from the 1990s.

			[[File:surge_Gemini_VG307_main_01.jpg\|thumb\|center\|400px\|Overall view of the Gemini Surge Model VG307.]]

	== Specifications ==		== Specifications ==

PowerPig at 02:27, 21 September 2026

2026-09-21T02:27:32Z

← Older revision		Revision as of 02:27, 21 September 2026
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	* [[Surge Protectors]]		* [[Surge Protectors]]
	* [[Collection Index]]		* [[Collection Index]]

			[[Category:Surge Protectors]]

PowerPig at 23:06, 19 September 2026

2026-09-19T23:06:44Z

← Older revision		Revision as of 23:06, 19 September 2026
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	While the rocker switch resembles an illuminated switch, no illumination is present on the documented example during operation.		While the rocker switch resembles an illuminated switch, no illumination is present on the documented example during operation.

			== Documented Example ==

			* OldSurge ID: OS-0007
			* Estimated Manufacturing Period: 1990s

	== See Also ==		== See Also ==

PowerPig at 17:37, 18 September 2026

2026-09-18T17:37:05Z

Show changes

PowerPig at 17:33, 18 September 2026

2026-09-18T17:33:05Z

← Older revision		Revision as of 17:33, 18 September 2026
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	== Teardown ==		== Teardown ==
			The VG307 utilizes stamped brass bus bars to distribute power to all seven outlets. The design minimizes wiring complexity and reduces the number of electrical connections required during manufacturing.

	~~The VG307~~ is ~~assembled using multiple screws and can be opened non~~-~~destructively~~.		A single epoxy-encapsulated surge-suppression assembly is mounted near the cord-entry point. The encapsulated design prevents identification of the individual internal components without destructive analysis.

	~~After removal~~ of the ~~enclosure screws,~~ the surge ~~protector separates into two primary housing halves~~.		The location and wiring of the assembly indicate that it provides the surge-suppression functionality associated with the VG307's "Gemini Surge" branding and 500-volt suppression specification.

	~~Internally,~~ the ~~unit utilizes brass bus bars to distribute power to the outlet assemblies~~. ~~A push-button circuit breaker is mounted near the cord-entry point~~.		Inspection of the interior revealed moderate dust accumulation and cobwebs consistent with long-term storage and use. No obvious signs of overheating, melting, or catastrophic electrical failure were observed.

	The ~~design~~ is ~~relatively simple and relies on mechanical outlet assemblies and metal bus bars rather than extensive wiring~~.		The resettable overcurrent-protection device is a ROTECH Model R-100 push-button circuit breaker rated for 15A at 120VAC.

			Unlike many later surge protectors, the surge-suppression circuitry appears to be contained within a single epoxy-encapsulated assembly mounted directly adjacent to the incoming power conductors.

	<gallery mode="packed" heights="250">		<gallery mode="packed" heights="250">
	File:surge_Gemini_VG307_teardown_open_01.jpg\|VG307 opened following removal of the enclosure screws.		File:surge_Gemini_VG307_teardown_open_01.jpg\|VG307 opened following removal of the enclosure screws.
	File:surge_Gemini_VG307_teardown_screws_01.jpg\|Enclosure screws removed during ~~disassembly~~.		File:surge_Gemini_VG307_teardown_screws_01.jpg\|Enclosure screws removed during teardown.
			File:surge_Gemini_VG307_teardown_middle_01.jpg\|Interior construction showing outlet assemblies and brass bus bars.
			File:surge_Gemini_VG307_teardown_cordentryend_01.jpg\|Cord-entry end showing internal wiring and circuit breaker.
			File:surge_Gemini_VG307_teardown_endwithoutcordentry_01.jpg\|Outlet end showing bus-bar power distribution.
			File:surge_Gemini_VG307_teardown_closeup_01.jpg\|Close-up of the epoxy-encapsulated surge-suppression assembly.
			File:surge_Gemini_VG307_teardown_circuitbreaker_01.jpg\|ROTECH Model R-100 push-button circuit breaker.
	</gallery>		</gallery>

PowerPig at 17:21, 18 September 2026

2026-09-18T17:21:55Z

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 File:surge_Gemini_VG307_pluggedin_switchoff_01.jpg|VG307 plugged in with the rocker switch in the OFF position.
 File:surge_Gemini_VG307_pluggedin_switchon_01.jpg|VG307 plugged in with the rocker switch in the ON position.
 </gallery>

PowerPig at 17:17, 18 September 2026

2026-09-18T17:17:10Z

← Older revision		Revision as of 17:17, 18 September 2026
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	The VG307 incorporates two keyhole mounting slots on the underside of the enclosure. The slot design supports installation in either horizontal or vertical orientations, providing flexibility for wall, desk, or cabinet mounting.		The VG307 incorporates two keyhole mounting slots on the underside of the enclosure. The slot design supports installation in either horizontal or vertical orientations, providing flexibility for wall, desk, or cabinet mounting.

			== Testing ==

			The documented example was tested for basic electrical operation and wiring integrity.

			A receptacle tester indicated correct hot, neutral, and ground wiring throughout the surge protector. The tester reported normal wiring with no open ground, open neutral, reversed polarity, or other wiring faults detected.

			The rocker switch successfully controlled power to all outlets. The surge protector remained energized and functional when the switch was turned on and disconnected power to the outlets when the switch was turned off.

			Although the red rocker switch resembles an illuminated switch, no illumination was observed during testing.

			<gallery mode="packed" heights="250">
			File:surge_Gemini_VG307_testpolaritygrounding_01.jpg\|Outlet tester indicating correct wiring and grounding.
			File:surge_Gemini_VG307_pluggedin_switchoff_01.jpg\|VG307 plugged in with the rocker switch in the OFF position.
			File:surge_Gemini_VG307_pluggedin_switchon_01.jpg\|VG307 plugged in with the rocker switch in the ON position.
			</gallery>

	== Operational Notes ==		== Operational Notes ==

PowerPig at 17:13, 18 September 2026

2026-09-18T17:13:22Z

← Older revision		Revision as of 17:13, 18 September 2026
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	* Device Type: Surge Protector		* Device Type: Surge Protector
	* Outlets: 7 grounded outlets		* Outlets: 7 grounded outlets
	* Circuit Breaker: Resettable push-button type
	* Maximum Load: 15A, 120VAC, 60Hz		* Maximum Load: 15A, 120VAC, 60Hz
	* Maximum Suppression: 500V		* Maximum Suppression: 500V
	* UL File Number: E111219
	* CSA File Number: LR69225
	* Country of Origin: China
	* Mounting: Dual keyhole wall-mount slots
	* Power Cord Length: Approximately 4 ft (1.2 m)		* Power Cord Length: Approximately 4 ft (1.2 m)
			* Power Cord Type: SJT
			* Conductors: 16 AWG × 3
			* Cord Temperature Rating: 75°C
	* Length: Approximately 12.25 in (31.1 cm)		* Length: Approximately 12.25 in (31.1 cm)
	* Width: Approximately 2.19 in (5.6 cm)		* Width: Approximately 2.19 in (5.6 cm)
	* Height: Approximately 1.25 in (3.2 cm)		* Height: Approximately 1.25 in (3.2 cm)
			* Country of Origin: China
			* UL File Number: E111219
			* CSA File Number: LR69225

	== Physical Description ==		== Physical Description ==
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	* Height: 1.25 in (3.2 cm)		* Height: 1.25 in (3.2 cm)

	The attached power cord measures approximately 4 ft (1.2 m) in length.		The attached power cord measures approximately 4 feet (1.2 m) in length and utilizes an SJT-rated jacket with three 16 AWG conductors. Cord markings indicate a 75°C temperature rating and identify the cord manufacturer as Rhythm.

	The VG307 utilizes a long, low-profile enclosure with rounded end caps and a single row of seven grounded outlets.		The VG307 utilizes a long, low-profile enclosure with rounded end caps and a single row of seven grounded outlets.

			The VG307 utilizes a grounded three-prong molded attachment plug permanently affixed to the four-foot power cord.

	The housing is supported by molded feet that elevate the enclosure slightly above the mounting surface.		The housing is supported by molded feet that elevate the enclosure slightly above the mounting surface.
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	The documented example is finished in beige plastic and incorporates a large red rocker-style power switch located near the power-cord entry point.		The documented example is finished in beige plastic and incorporates a large red rocker-style power switch located near the power-cord entry point.

	The underside of the enclosure ~~incorporates two keyhole-shaped~~ wall~~-mount slots for permanent installation beneath desks~~, ~~benches~~, or ~~shelving~~ - with ~~slots supporting mounting in the vertical or horizontal position~~.		The VG307 incorporates two keyhole mounting slots on the underside of the enclosure. The slot design supports installation in either horizontal or vertical orientations, providing flexibility for wall, desk, or cabinet mounting.

			The attached power cord bears markings identifying it as an SJT-type cord utilizing three 16 AWG conductors with a 75°C temperature rating.

	~~Four~~ molded support feet ~~elevate~~ the enclosure slightly above the mounting surface and ~~help stabilize~~ the unit when placed on a flat surface.		The molded support feet serve a dual purpose: elevating the enclosure slightly above the mounting surface and stabilizing the unit to prevent rocking when placed on a flat surface.

	The housing is assembled using multiple screws, permitting non-destructive disassembly.		The housing is assembled using multiple screws, permitting non-destructive disassembly.

			== Mounting Provisions ==

			The VG307 incorporates two keyhole mounting slots on the underside of the enclosure. The slot design supports installation in either horizontal or vertical orientations, providing flexibility for wall, desk, or cabinet mounting.

	== Operational Notes ==		== Operational Notes ==
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	The unit incorporates a red rocker-style power switch. While the switch resembles an illuminated rocker switch, no illumination is present on the documented example during operation.		The unit incorporates a red rocker-style power switch. While the switch resembles an illuminated rocker switch, no illumination is present on the documented example during operation.

	== ~~Product Gallery~~ ==		== Condition Upon Acquisition ==

			The documented example was acquired as part of a collection of surplus electronic equipment and showed accumulated dust, dirt, and cosmetic wear consistent with long-term use.

			The unit was cleaned prior to detailed documentation and photography.

			[[File:surge_Gemini_VG307_Beforecleaning_01.jpg\|center\|600px\|VG307 as acquired before cleaning.]]

	== Product Gallery ==		== Product Gallery ==
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	File:surge_Gemini_VG307_bottomcordentryside_01.jpg\|Cord-entry end showing wall-mount provisions.		File:surge_Gemini_VG307_bottomcordentryside_01.jpg\|Cord-entry end showing wall-mount provisions.
	File:surge_Gemini_VG307_bottommiddle_01.jpg\|Underside product information panel.		File:surge_Gemini_VG307_bottommiddle_01.jpg\|Underside product information panel.
			File:surge_Gemini_VG307_bopttom_endwithoutcord_01.jpg\|Bottom view of the end opposite the power cord.
			File:surge_Gemini_VG307_plugandcord_01.jpg\|Grounded power plug and cord.
			File:surge_Gemini_VG307_plugmarkings_01.jpg\|Power plug with molded approval markings.
			File:surge_Gemini_VG307_cordmarkings_01.jpg\|Power cord specification markings.
			File:surge_Gemini_VG307_morecordmarkings_01.jpg\|Additional power cord markings.
	</gallery>		</gallery>