Usually when they want 4 bonding spots it is 4 spots around the pool, bonding it in 4 spots in the same location would seem overkill to me but I'm not speaking from any authority on this. I could see the electricians POV on that, say he loosens a nut or 4 and the pool bursts open, who is liable for the damages? It may be worth seeing if the installer would come out and assist the electrician with this.
ETA: As far as the 4 spots go the code requires states
"The bonding grid must comply with (a) or (b) and be attached to the conductive pool reinforcing steel at a minimum of four points uniformly spaced around the perimeter of the walls of a pool, outdoor spa, or outdoor hot tub"
So the 4 points in one spot wouldn't comply with the code either. I don't think I can be much more help as it seems there is an impasse between the professionals and what should be done.
Electricians can do testing on site to prove that the resin is non conductive very easily, but how would the inspector know he did that?
ETA: As far as the 4 spots go the code requires states
"The bonding grid must comply with (a) or (b) and be attached to the conductive pool reinforcing steel at a minimum of four points uniformly spaced around the perimeter of the walls of a pool, outdoor spa, or outdoor hot tub"
So the 4 points in one spot wouldn't comply with the code either. I don't think I can be much more help as it seems there is an impasse between the professionals and what should be done.
Electricians can do testing on site to prove that the resin is non conductive very easily, but how would the inspector know he did that?
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