I think I know the right answer, but I want to have some of the experts here look over my shoulder. I am replacing the complete light fixture in my attached spa with a match to the existing Pentair Amerlite pool light fixture. Before completing the project, I want to make sure that the electrical bonding to the stainless steel wet niche is proper and safe.
The above is a picture of the interior of the wet niche. There was a ton of plaster on the surface of the niche and this picture is after I chipped away most of it. Some of the plaster was literally 1/2 inch thick. There was no #8 copper bonding wire attached to the interior of the wet niche. The picture shows where the bonding wire would have landed. This bonding connection point was completely covered in plaster. The brass/copper bolt sheared off when I tried to remove it. My pool was built in 1983 and apparently used a brass conduit for the light conduit (which I understand has almost completely disappeared in lieu of PVC conduit in modern times).
My belief is that the spa light is properly bonded as it sits and that I do not have to pull a #8 copper bonding conductor when I pull the new light cable in the existing brass conduit.
Any thoughts or comments?