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#62269 - 02/12/06 10:37 AM grounding electrode conductors
lite bulb Offline
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Registered: 02/12/06
Posts: 76
Loc: wilm,de.
when derating sevice conductors 4/0 for 3/0 copper for a 200 amp service do you use #2 for the grounding electrode conductor or #4.

[This message has been edited by lite bulb (edited 02-12-2006).]
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#62270 - 02/12/06 03:04 PM Re: grounding electrode conductors
gfretwell Offline


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Registered: 07/20/04
Posts: 9039
Loc: Estero,Fl,usa
There is no relief in 250.66 for derated service conductors. If it is 4/0 copper you need the #2

[This message has been edited by gfretwell (edited 02-12-2006).]
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