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#79219 12/07/01 01:42 PM
Joined: Dec 2001
Posts: 5
M
mdsmith Offline OP
Junior Member
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?

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#79220 12/07/01 02:03 PM
Joined: Nov 2000
Posts: 2,148
R
Member
Each neutral carries the same current at the associated phase conductor and therefore must be counted as current carrying conductors.
Don(resqcapt19)


Don(resqcapt19)
#79221 12/07/01 06:43 PM
Joined: Aug 2001
Posts: 335
S
Member
In a word... yes. If you have a shared neutral on a single phase multiwire circuit it would not count.

#79222 12/08/01 08:47 AM
Joined: Jan 2001
Posts: 75
G
Member
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).

#79223 12/09/01 01:10 AM
Joined: Dec 2000
Posts: 4,294
Member
Absolutely. Each neut carries the full load.

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


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