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#104622 - 09/11/03 04:16 AM Underground Copper Water Pipe as an Electrode
Joe Tedesco Offline

Registered: 10/07/00
Posts: 3325
Loc: Boston, Massachusetts USA

The water pipe run underground from the street into the alley and into the water meter is the main water supply and the piece above is what supplies the building.

Question: Can someone give a summary of the 2002 NEC rules that address the use of the water pipe as an electrode, and cover any limitations that may be considered here?
Joe Tedesco, NEC Consultant

2014 / 2011 NEC & Related Books and Study Guides
#104623 - 10/17/03 02:20 PM Re: Underground Copper Water Pipe as an Electrode
Tir Offline
Junior Member

Registered: 10/17/03
Posts: 5
Loc: Garland, Tx.-US
I know this reply is a little dated but here it goes..article 250.52.a.1 states that there must be at least 10' of metal underground pipe in direct contact with the alternate grounding electrode would have to be selected.


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