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Sub-panel #7716
02/17/02 10:27 PM
02/17/02 10:27 PM
B
Boomer  Offline OP
Junior Member
Joined: Feb 2002
Posts: 5
Question, If a sub-panel is being feed from a breaker in a main-panel thru a square wireway,can branch circuits wires be in the same square wireway as the wires feeding the sub-panel? Boomer

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Re: Sub-panel #7717
02/18/02 08:14 AM
02/18/02 08:14 AM
S
sparky  Offline
Member
Joined: Oct 2000
Posts: 5,360
Boomer,
i see no violation in feeders & branch circuits occuping the same space....

Re: Sub-panel #7718
02/18/02 08:19 AM
02/18/02 08:19 AM
F
Frank Cinker  Offline
Member
Joined: Jul 2001
Posts: 311
Pennsylvania
If your question is: Can feeder conductors be installed the same raceway as branch circuit conductors, the answer is yes.

Don't forget to derate if applicable.

Re: Sub-panel #7719
02/18/02 08:17 PM
02/18/02 08:17 PM
C
CTwireman  Offline
Member
Joined: Feb 2002
Posts: 840
Connecticut, USA
Check out 230-7. Feeders and branch circuits cannot occupy the same space as service conductors.
So, there is no violation as long as there are no service conductors in the wireway you mentioned. Since you metioned that this is a sub-panel, I dont see a problem.

See page 101 of Mike Holt's "Understanding the NEC 1999" if you have it. It explains this sitation really well.

[This message has been edited by CTwireman (edited 02-18-2002).]


Peter
Re: Sub-panel #7720
02/19/02 09:24 AM
02/19/02 09:24 AM
electure  Offline

Member
Joined: Dec 2000
Posts: 4,274
Fullerton, CA USA
See 362-5 or 376.22
If you exceed 30 current carrying conductors, you'll have to derate to 40% up to 40 conductors, or 35% beyond that.
Up to 30 conductors, derating is not applicable.
I'm the big "Gutter Complainer" of the group [Linked Image]
Edited 'cause I used the wrong article.[foot in mouth] Thanks, Joe![/foot in mouth]



[This message has been edited by electure (edited 02-19-2002).]

Re: Sub-panel #7721
02/21/02 07:06 PM
02/21/02 07:06 PM
S
Steve Miller  Offline
Member
Joined: Aug 2001
Posts: 325
Loudoun Cty, VA
Well Boomer, if we can't ...let's just say there are "several" illegal sub panels in the DC/VA area. [Linked Image]


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