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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: Grounding... posted by mkuller on November 18, 2006 at 11:06:25:
The 1990 NEC was the change point on Shall Not for using metallic underground gas piping as a legit grounding electrode.The 1987 NEC did allow it, but conditionally; requiring 'express' permission from, in your case, PG&E, and the local inspection authority. Being one (or more) editions behind in what version of the Code is enforced is not atypical.
NEC 250.83(A) permiting, then denying the 'legality' of gas piping as a suitable grounding electrode has been bouncing back and forth for a long time. A little politicking going on by the Gas Industry.
Having said that, I find it difficult to believe that your place doesn't have a ground rod at the service. I'd certainly consider getting one added. I'd also ensure that your incoming water piping is bonded to the service ground. Throw in a hot/cold piping bond at the top of your water heater; sized correctly, of course.
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Follow Ups
- 1991,or so... - cdb 12:54:40 11/18/06 (1)
- Re: 1991,or so... - mkuller 16:31:21 11/18/06 (0)
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