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#50407 04/01/05 05:19 PM
Joined: Dec 2004
Posts: 1,064
D
Member
Are all circuits leaving a panel board, protected by breakers considered branch circuits only?

Or Feeders also?

#50408 04/01/05 05:27 PM
Joined: Jan 2003
Posts: 4,391
I
Moderator
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
#50409 04/01/05 07:22 PM
Joined: Oct 2004
Posts: 135
B
Member
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.

#50410 04/01/05 07:40 PM
Joined: Jul 2004
Posts: 625
S
Member
But, it's not necessarily a "feeder" for purposes of Table 310.15(B)(6).

YMMV.

#50411 04/01/05 08:18 PM
Joined: Oct 2004
Posts: 135
B
Member
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.

#50412 04/01/05 08:49 PM
Joined: Jul 2004
Posts: 625
S
Member
I'll refer you to this discussion about 310:15(B)(6):
https://www.electrical-contractor.net/ubb/Forum2/HTML/001450.html

#50413 04/01/05 09:30 PM
Joined: Oct 2004
Posts: 135
B
Member
Thanks, that was exhausting but I guess I asked for it.


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