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What wound you suspect if a swimmer( I'm not sure how reliable the complaint)
Felt a tingle near a pool light (12 volt) other than chasing the first thoughts on correct bonding. Other possible variable:
This us a older commercial pool and in the past a few landscape fixture ( fluorescent bulbs) have been added to pool light circuit, pool light circuit on a 2/pole relay with other circuit for other landscape fixtures.
Actually I did not Check to see if possible neutral sharing with who knows what!!
Any experience?
 

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That can be a tough one. You have to take it seriously but, if you can't measure voltage anywhere, you have to work backwards and make sure everything is properly protected.

I don't think I'd want to jump in the pool and hand test it. If it's only 12V, no problem but the source could be an open neutral on a 120V source going to "ground" wherever it can (via the light conduit or ground wire).

I've only see it once and it was an open neutral on the 120V light. My NC tester was lighting up near the water (in the skimmer) where the pool guy felt a buzz.



Maybe affix a copper wire probe on a piece of PVC and touch the light trim ring.

Run a ground wire back to the panel to complete the path and use your digital voltage tester. Probe the railings and any other metal you can find.

What ever you do, do SOMETHING. Now that you have touched it, your ass is on the line.
 
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