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#50436 - 04/01/05 06:35 PM main lug or breaker for Sub Panel?
Electric Ian Offline
Member
Registered: 02/10/04
Posts: 133
Loc: MA, USA
I am installing a sub panel in an attic space to be finished. It will be fed from a 60A breaker in the main panel in the basement. Would you typically use a main lug panel or main breaker panel for the sub in this situation ?
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#50437 - 04/01/05 08:03 PM Re: main lug or breaker for Sub Panel?
Dave55 Offline
Member
Registered: 05/08/04
Posts: 697
Loc: Crystal Lake, Illinois, USA
I almost always use main breaker panels for sub-panels. I consider it an additional disconnect and haven't had any complaints from inspectors yet.

Dave
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#50438 - 04/02/05 10:49 AM Re: main lug or breaker for Sub Panel?
Joey D Offline
Member
Registered: 10/10/03
Posts: 259
Loc: Arlington MA U.S.
Most main breaker panels come with the neutral bar bonded to the ground bar or just have 2 neutral bars bonded together. This would need to be seperate in a sub panel use
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#50439 - 04/02/05 12:05 PM Re: main lug or breaker for Sub Panel?
BobH Offline
Member
Registered: 10/16/04
Posts: 135
Loc: Newfane, N.Y USA
You should be able to do it either way as long as grounded conductor is isolated from grounding conductor and you use a 4 wire feeder.
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#50440 - 04/02/05 02:55 PM Re: main lug or breaker for Sub Panel?
northstar Offline
Member
Registered: 03/10/05
Posts: 42
Loc: Long Island, New York
Im for the Main breaker panel with an Isolated nutreal bar. The added disconnect and protection could only be a good thing. However, the more economical way to go is the main lug which has an iso bar already in it.
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