Nm Cable

Nitro9119

hi all i am bidding a job that is in existing building. It has a lot of nm cable in it and mc cable to. I dont know whit kind of cable i should be using for new work

Magnettica

Neither do I.

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nap

If you are an electrical contractor in New York, you surely should know the electrical codes for New York.

You should know, or have access to, the codes for any jurisdiction you intend on working within. Anything less would simply be dumb. What happens if you bid in NM and get the job and then realize it must be in MC. Guess who gets to lose their ass on the job?

Educate yourself properly or don;t bid the work.

Speedy Petey

Come on man. You can't seriously have "electrical" as your contracting trade in your profile and still be asking this question.

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mickeyco

Where are you getting New York from?

.

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mickeyco

I'd use NW cable.

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Some people climb mountains. I take out the trash. But we both do it for the same reason.

nap

Umm, from this excerpt from the original post:

where I misread new work for new york.



dammit, I guess I need to be getting some new glasses.

So, ignore the New York comment but the rest remains.

genecarp

cat 765, all around, code in guam, and new york

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neolitic

That's okay, OP proly meant
Newark!

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(Sorry....it seems there really are dumb questions)

mdshunk

If the original poster isn't run off already, there's a few clues that can help you decide:

*In one and two family dwellings, you can pretty much run NM where ever you want to.
*In larger than two family dwellings, you can run NM where ever you want to (normally) as long as it is concealed. If the building is constructed as a "fireproof" construction type, you can't run NM cable anywhere, and you must use a metallic wiring method. You can identify these buildings by the fire walls, fire doors, sprinkler systems, etc.
*In non-dwelling construction (commercial work), you can run NM where ever you want (normally) as long as it is concealed. You cannot, under any circumstance, run NM above the dropped ceiling in commercial work now. It must be a metallic wiring method. If the building is constructed as a "fireproof" construction type, you can't run NM cable anywhere, and you must use a metallic wiring method. You can identify these buildings by the fire walls, fire doors, sprinkler systems, etc.

These are just some rules of thumb that work pretty well, which can be modified by local rules and even, regrettably, at the whim of locals who just don't understand the rules. Realistically, when the project gets complicated enough that it's unclear to the electrician what wiring method you are permitted to use where, an engineer is normally involved. This complicated stuff doesn't normally sneak through plan review without an engineer spelling out how the thing is to be wired. That doesn't help a guy that's trying to prepare a budgetary estimate before plan review, however.