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main lug or breaker for Sub Panel? #50436
04/01/05 10:35 PM
04/01/05 10:35 PM
E
Electric Ian  Offline OP
Member
Joined: Feb 2004
Posts: 133
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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Re: main lug or breaker for Sub Panel? #50437
04/02/05 12:03 AM
04/02/05 12:03 AM
D
Dave55  Offline
Member
Joined: May 2004
Posts: 697
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

Re: main lug or breaker for Sub Panel? #50438
04/02/05 02:49 PM
04/02/05 02:49 PM
J
Joey D  Offline
Member
Joined: Oct 2003
Posts: 259
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

Re: main lug or breaker for Sub Panel? #50439
04/02/05 04:05 PM
04/02/05 04:05 PM
B
BobH  Offline
Member
Joined: Oct 2004
Posts: 135
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.

Re: main lug or breaker for Sub Panel? #50440
04/02/05 06:55 PM
04/02/05 06:55 PM
N
northstar  Offline
Member
Joined: Mar 2005
Posts: 42
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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