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#82894 - 12/20/02 09:02 PM 12-2-2?
ga.sparky56 Offline
Member
Registered: 11/24/02
Posts: 558
Loc: young harris georgia usa
Saw some some of the new 12-2-2 nmb today. One of the white wires has a red stripe or tracer on it, can this be used as agrounded conductor or neutral whichever term you prefer.
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#82895 - 12/21/02 04:40 AM Re: 12-2-2?
Electricmanscott Offline
Member
Registered: 01/12/02
Posts: 1457
Loc: Holden, MA USA
I don't see anything ragarding a red stripe but the point is not to use the stripe to identify it as a neutral but to distinguish it from the other neutral within the cable. I don't see a problem with it. The reason for this cable is to provide two circuits.
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#82896 - 12/21/02 02:35 PM Re: 12-2-2?
Redsy Offline
Member
Registered: 03/28/01
Posts: 2056
Loc: Bucks County PA
Although this new product seems to be, technically, a violation of 200.6(A), I believe it will eventually be recognized by the NEC. I doubt an inspector would shoot down an installation utilizing this cable.

Now, as far as the term "neutral"...

[This message has been edited by Redsy (edited 12-21-2002).]
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#82897 - 12/21/02 06:30 PM Re: 12-2-2?
Bjarney Offline
Moderator
Registered: 04/10/02
Posts: 2527
Loc: West-Southern Inner-Northeast ...
Seems a bit odd because the assembly would require an 80% adjustment factor, right? [99 NEC] Table 310-15(b)(2)(a). "...More than Three Current-Carrying Conductors in a...Cable".
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#82898 - 12/21/02 07:33 PM Re: 12-2-2?
resqcapt19 Offline
Member
Registered: 11/10/00
Posts: 2148
Loc: IL
Bjarney,
You are correct, but NM cable uses 90°C conductors and an #12 with an 80% derating is still over 20 amps. With 2 of these cables bundled together we would have 8 current carrying conductors and 70% derating. The ampacity would be 21 amps.
Don
_________________________
Don(resqcapt19)
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#82899 - 12/21/02 07:45 PM Re: 12-2-2?
ga.sparky56 Offline
Member
Registered: 11/24/02
Posts: 558
Loc: young harris georgia usa
Redsy,200.6(a)is what I thought of,but now Bjarney says I have to derate it,Wonder how many ahjs will allow it without derating?
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#82900 - 12/21/02 08:02 PM Re: 12-2-2?
ga.sparky56 Offline
Member
Registered: 11/24/02
Posts: 558
Loc: young harris georgia usa
Thanks guys,I pulled several runs of it today in an old farmhouse renovation. I feel abit better about it now.
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