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#82894 - 12/21/02 01:02 AM 12-2-2?  
ga.sparky56  Offline
Member
Joined: Nov 2002
Posts: 558
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 08:40 AM Re: 12-2-2?  
Electricmanscott  Offline
Member
Joined: Jan 2002
Posts: 1,457
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.


#82896 - 12/21/02 06:35 PM Re: 12-2-2?  
Redsy  Offline
Member
Joined: Mar 2001
Posts: 2,056
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"... [Linked Image]

[This message has been edited by Redsy (edited 12-21-2002).]


#82897 - 12/21/02 10:30 PM Re: 12-2-2?  
Bjarney  Offline
Moderator
Joined: Apr 2002
Posts: 2,527
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".


#82898 - 12/21/02 11:33 PM Re: 12-2-2?  
resqcapt19  Offline
Member
Joined: Nov 2000
Posts: 2,148
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)

#82899 - 12/21/02 11:45 PM Re: 12-2-2?  
ga.sparky56  Offline
Member
Joined: Nov 2002
Posts: 558
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?


#82900 - 12/22/02 12:02 AM Re: 12-2-2?  
ga.sparky56  Offline
Member
Joined: Nov 2002
Posts: 558
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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