ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
Welded Copper Connections
by gfretwell. 04/19/19 04:46 PM
Norwegian power?
by dsk. 04/19/19 10:29 AM
Israel
by annemarie1. 04/18/19 02:35 PM
Water heater calculationsSo when I count calculati
by watersparkfalls. 04/13/19 12:43 PM
Health Canada Electric Construction heaters recall
by dougwells. 04/12/19 01:22 AM
New in the Gallery:
What is this for?
Plug terminals
Who's Online Now
0 registered members (), 11 guests, and 6 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Feeder/Branch circuits #50407
04/01/05 05:19 PM
04/01/05 05:19 PM
D
Dnkldorf  Offline OP
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?

Work Gear for Electricians and the Trades
Re: Feeder/Branch circuits #50408
04/01/05 05:27 PM
04/01/05 05:27 PM
I
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
Re: Feeder/Branch circuits #50409
04/01/05 07:22 PM
04/01/05 07:22 PM
B
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.

Re: Feeder/Branch circuits #50410
04/01/05 07:40 PM
04/01/05 07:40 PM
S
SolarPowered  Offline
Member
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.

Re: Feeder/Branch circuits #50411
04/01/05 08:18 PM
04/01/05 08:18 PM
B
BobH  Offline
Member
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.

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

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


Featured:

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
sbi
sbi
indiana
Posts: 47
Joined: March 2008
Show All Member Profiles 
Top Posters(30 Days)
Popular Topics(Views)
254,459 Are you busy
190,701 Re: Forum
180,413 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.018s Queries: 14 (0.004s) Memory: 0.9828 MB (Peak: 1.1351 MB) Zlib enabled. Server Time: 2019-04-20 07:06:20 UTC