Posted by MoparNorm on Thursday, September 20, 2007 at 03:51:52 :
In Reply to: Single point grounds posted by David Sherman on Thursday, September 20, 2007 at 01:48:55 :
In some cities in CA, they require three grounding sources for the service main.
1) Ufer ground of at least 25' into the foundation (rebar) or 8' deep ground rod.
2) cold water ground
3) gas pipe ground
That number 3 always bothered me....= )