ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals

Topic Options
Rate This Topic
#79219 - 12/07/01 09:42 AM NEC 310.15 (B) (2) (a)
mdsmith Offline
Junior Member
Registered: 12/07/01
Posts: 5
When you install 120V, single phase circuits in a raceway, each with a separate neutral, do you count the neutrals when applying the provisions of 310.15(B)(2)(a)? or does 310.15(B)(4)(a) apply to this situation?
Top
2017 / 2014 NEC & Related Books and Study Guides
#79220 - 12/07/01 10:03 AM Re: NEC 310.15 (B) (2) (a)
resqcapt19 Offline
Member
Registered: 11/10/00
Posts: 2148
Loc: IL
Each neutral carries the same current at the associated phase conductor and therefore must be counted as current carrying conductors.
Don(resqcapt19)
_________________________
Don(resqcapt19)
Top
#79221 - 12/07/01 02:43 PM Re: NEC 310.15 (B) (2) (a)
Steve Miller Offline
Member
Registered: 08/30/01
Posts: 325
Loc: Loudoun Cty, VA
In a word... yes. If you have a shared neutral on a single phase multiwire circuit it would not count.
Top
#79222 - 12/08/01 04:47 AM Re: NEC 310.15 (B) (2) (a)
Glenn Offline
Member
Registered: 01/17/01
Posts: 75
Steve,

Isn't that on linear loads?

Non-linear loads using a multiwire method ( N-A-B-C ), the neutral is considered a current carrying conductor. 220-22 FPN#2, 310-15(b)(4)(c).
Top
#79223 - 12/08/01 09:10 PM Re: NEC 310.15 (B) (2) (a)
electure Offline


Member
Registered: 12/24/00
Posts: 4259
Loc: Fullerton, CA USA
Absolutely. Each neut carries the full load.

[This message has been edited by electure (edited 12-09-2001).]
Top

Member Spotlight
Member Since: 11/17/00
Posts: 2232
New in the Gallery:
SE cable question
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box


Who's Online
0 registered (), 59 Guests and 9 Spiders online.
Key: Admin, Global Mod, Mod
 
New in the Gallery:
SE cable question
 
Top Posters (30 Days)
Admin 47
HotLine1 43
gfretwell 19
Ruben Rocha 12
Trumpy 9
 
Newest Members
Freecrowder, clee512, Jdscott2005, FAIZAN, Regitest2

ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals