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#50407 - 04/01/05 05:19 PM Feeder/Branch circuits  
Dnkldorf  Offline
Member
Joined: Dec 2004
Posts: 1,064
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 05:27 PM Re: Feeder/Branch circuits  
iwire  Offline
Moderator
Joined: Jan 2003
Posts: 4,391
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

#50409 - 04/01/05 07:22 PM Re: Feeder/Branch circuits  
BobH  Offline
Member
Joined: Oct 2004
Posts: 135
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.


#50410 - 04/01/05 07:40 PM Re: Feeder/Branch circuits  
SolarPowered  Offline
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Joined: Jul 2004
Posts: 625
Palo Alto, CA, USA
But, it's not necessarily a "feeder" for purposes of Table 310.15(B)(6).

YMMV.


#50411 - 04/01/05 08:18 PM Re: Feeder/Branch circuits  
BobH  Offline
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Joined: Oct 2004
Posts: 135
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.


#50412 - 04/01/05 08:49 PM Re: Feeder/Branch circuits  
SolarPowered  Offline
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Joined: Jul 2004
Posts: 625
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


#50413 - 04/01/05 09:30 PM Re: Feeder/Branch circuits  
BobH  Offline
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Joined: Oct 2004
Posts: 135
Newfane, N.Y USA
Thanks, that was exhausting but I guess I asked for it.



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