zam
Member
- Location
- New York, NY
4#10 and 1#8 ground . . . can the ground size be larger than the size of the current carrying conductors? Thank you.
250.122(A) says the EGC is never required to be larger than the current-carrying conductors. But nothing prohibits it.
Is there a similar NEC article for service grounding conductors? 250.122(A) is for equipment grounding conductors.
I can't conceive of a situation in which #10 wire would be used for the service conductors. So please clarify your question. Are you talking about the grounding electrode conductor, or perhaps about a "ground" wire that is run from the service transformer to the main service panel?Is there a similar NEC article for service grounding conductors? 250.122(A) is for equipment grounding conductors.
Never seen a 30 amp service for limited load applications?I can't conceive of a situation in which #10 wire would be used for the service conductors. So please clarify your question. Are you talking about the grounding electrode conductor, or perhaps about a "ground" wire that is run from the service transformer to the main service panel?
While we are on the subject, can you give us some context for the question? Is this an existing installation that you have come upon, or perhaps a design that has not yet been constructed?
If you are talking minimum size "grounded service conductor", yes. It must be able to handle maximum imbalance load yet never can be smaller than the required supply side bonding jumper. See 250.24(C) and (C)(1).Is there a similar NEC article for service grounding conductors? 250.122(A) is for equipment grounding conductors.
Never seen a 30 amp service for limited load applications?
I've seen a 30A service on a single family home. We even installed solar on it. :happyyes: