nm cable as a feeder

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kabbak

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St. Louis, MO, America
Looking at my NEC book, I have searched articles 215 and 334 and I can't find anything specific about using NM cable as a feeder (334 seems unnecessarily vague, especially considering the detailed permissions listed for other cable types). My gut feeling is that it shouldn't be permitted, but the price point between it and se cable or ac/mc is too good not to at least get some feedback on. Any help would be appreciated.
 
kabbak said:
Looking at my NEC book, I have searched articles 215 and 334 and I can't find anything specific about using NM cable as a feeder (334 seems unnecessarily vague, especially considering the detailed permissions listed for other cable types). My gut feeling is that it shouldn't be permitted, but the price point between it and se cable or ac/mc is too good not to at least get some feedback on. Any help would be appreciated.
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You can use NM as a feeder.
 
As Bob stated yes you can use NM cable as a feeder but you are limited by size as NM cable is limited to a maximum of #2 AWG conductors. For larger feeders a different wiring method is needed.
 
Is that per code or just preference? SE cable seemed like it might have been the ticket. I'd imagine it would be easier to pull than AC or MC, but perhaps I'm mistaken. Anyone have any input on ease of use for those options? Pulling through floor joists and fishing through a base plate.
 
kabbak said:
Is that per code or just preference? SE cable seemed like it might have been the ticket. I'd imagine it would be easier to pull than AC or MC, but perhaps I'm mistaken. Anyone have any input on ease of use for those options? Pulling through floor joists and fishing through a base plate.
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NM is just really pricey, particularly in the large sizes.
 
We use 6/3 nm for 60 amp subpanel as long as the load isn't greater than 55 amps. NM is only rated 60C but depending on the code cycle SER can be used at 75C. If we used aluminum you would need a size bigger and I hate having to install that in the panel. It would be cheaper to use se cable. I am not sure my supplier carries 4/3 ser
 
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