Here on Long Island, quite a few homes have excessive humidity build-up of moisture on the water main pipe that enters the home. What I normally do during a service change is to Scotch-Kote the clamp and surrounding area of the pipe. Too many times have I seen the clamps severly corrorded. With the scotch-kote on the corrorsion stops, and years later you can check the clamp like it was new. I would like to see this as part of the code, but I think the breathing of the fumes of the Scotch-kote might be an issue. Any ideas? Steve T.
To the best of my knowledge, oxides of copper are still excellant conductors, unlike aluminum oxide which is more of an insulator. If I was to pick a product to use, it would be "Copper Kote" by T&B, applied between the clamp & pipe.
Few things are harder to put up with than the annoyance of a good example.
Re: Ground Clamps at water main#2854 07/27/0111:42 PM07/27/0111:42 PM
I never realized there were so many different types!
I'm going to look at a bottle at BGE tomorrow to see which type I usually buy when needed.
BTW the ScotchKote I use tends to weaken the jackets of SOW cable. Learned that one the hard way in a fountain light installation. (no one was hurt). I hardly have used it since then. My buddy (and fellow EC) Joe M. got some on his exposed (river shoes) foot (don't tell OSHA) and had an ulcer for about a month on the top of his foot. Nasty! (In his defense, he had to wade out in 1.5' of water to make the repair) I have used it to WP submersible pump connections since, however. The remainder of that bottle ended up as a 1/8" deep mess in the back of my truck... Got the lid on crooked... Remnants remain on some of my tools...
Uhhh.. So much for coherence!
[This message has been edited by sparky66wv (edited 07-27-2001).]
-Virgil Residential/Commercial Inspector 5 Star Inspections Member IAEI
Re: Ground Clamps at water main#2855 07/28/0111:52 AM07/28/0111:52 AM