File:Surge APC Pro7 4Z0638P12907 testing polaritygrounding 01.jpg
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Functional testing of an APC SurgeArrest Professional PRO7 using a receptacle tester. The tester indicates correct hot, neutral, and ground wiring at the outlet. The green Protection Working indicator is illuminated, although visibly dimmer than typical APC PRO7 examples documented by the archive.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 18:08, 13 October 2026 | | 1,600 × 788 (240 KB) | PowerPig (talk | contribs) |
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