Underwater Pool light
I've read the code and have some understanding. Here's my situation: Replacing concrete deck around pool and removed old diving board stand. The brass conduit for underwater light ran through the old diving board stand and was imbedded in concrete; conduit was also cracked at a threaded junction - had to cut and remove a section of conduit but still have plenty of threads left for a solid connection. Can't find brass conduit anywhere! I know I can use pvc with a female adaptor,etc. My questions:
1) The #8 stranded bonding wire is supposed to run from junction box to niche and be properly potted in the niche -
Where does this wire connect to in the niche, the same screw that holds the light in place; there are not other metal parts or screws?
2) What is potting compound, where can I get it, and can I apply it underwater?
3) An electrician looked at the "project" and said to use galvanized conduit. Is galvanized conduit appropriate and will it last - water is always in the conduit...?
I have to at least get conduit run so they can pour my concrete. If I can use PVC and attach and pott the #8 bonding wire to the little metal tab where the light attaches, I will be good to go. This is a very old light and fixture but still works fine.
Please respond ASAP, and thanks in advance for your help. Thanks.