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#50407 - 04/01/05 01:19 PM Feeder/Branch circuits
Dnkldorf Offline
Member

Registered: 12/12/04
Posts: 1091
Loc: nowhere usa
Are all circuits leaving a panel board, protected by breakers considered branch circuits only?

Or Feeders also?

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#50408 - 04/01/05 01:27 PM Re: Feeder/Branch circuits
iwire Offline
Moderator

Registered: 01/05/03
Posts: 4343
Loc: North Attleboro, MA USA
Circuits leaving a panel can be either branch circuits or feeders.

 Quote:
Branch Circuit. The circuit conductors between the final overcurrent device protecting the circuit and the outlet(s).


 Quote:
Feeder. All circuit conductors between the service equipment, the source of a separately derived system, or other power supply source and the final branch-circuit overcurrent device.
_________________________
Bob Badger
Construction & Maintenance Electrician
Massachusetts

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#50409 - 04/01/05 03:22 PM Re: Feeder/Branch circuits
BobH Offline
Member

Registered: 10/16/04
Posts: 134
Loc: Newfane, N.Y USA
So if a main panel houses a 60a breaker feeding a main lug sub, the conductors between the 60a breaker and the sub-panel are feeders.

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#50410 - 04/01/05 03:40 PM Re: Feeder/Branch circuits
SolarPowered Offline
Member

Registered: 07/05/04
Posts: 615
Loc: Palo Alto, CA, USA
But, it's not necessarily a "feeder" for purposes of Table 310.15(B)(6).

YMMV.

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#50411 - 04/01/05 04:18 PM Re: Feeder/Branch circuits
BobH Offline
Member

Registered: 10/16/04
Posts: 134
Loc: Newfane, N.Y USA
Why would it not necessarily be a feeder? Are you saying it would be a service conductor(s) if this was a separate building? Please elaborate.

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#50412 - 04/01/05 04:49 PM Re: Feeder/Branch circuits
SolarPowered Offline
Member

Registered: 07/05/04
Posts: 615
Loc: Palo Alto, CA, USA
I'll refer you to this discussion about 310:15(B)(6):
http://electrical-contractor.net/ubb/Forum2/HTML/001450.html

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#50413 - 04/01/05 05:30 PM Re: Feeder/Branch circuits
BobH Offline
Member

Registered: 10/16/04
Posts: 134
Loc: Newfane, N.Y USA
Thanks, that was exhausting but I guess I asked for it.

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