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Stan, after reading your posts I don't think there's really any conflict here, maybe I could've communicated better. Wish I could show you the floor plan. To give you a better idea of what I'm...

"The ONLY time this is safe is IF: a) the water pipe in question is being used as a grounding electrode, and b) you connect your ground within 5' of where the pipe enters the house.
Tell you...

Stan, thanks for your reply. The situation is an old home built probably in the late 40's or 50s. The kitchen is being remodeled, all the sheetrock removed making it possible to strip out all of...

I am also facing this dillemna - connecting an old 3-wire 220, extending it with a 4-wire. The solution given me by an experience electrician is simply to ground the new green wire to a copper...