type of wire

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MichaelJames

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My friend is opening a pub that will seat over 100 people...I have heard diffent versions of where to find it in the code book. I'd like to save him $ by usung NM cable versus MC cable.
Someone said we can use NM as long as its concealed within the walls and once it leaves the walls it must change to MC or pipe.I know that in drop ceilings it has to be MC cable because there isn't a fire rating of at least 15 minutes...
I see the " uses " in the wire section of the book, looks like, NM is ok to use.
I worked in an industrial setting for 10 years and left and have done the easy residential wiring since then. I am not to familiar with commercial wiring applications.
I know the safe way to do it is with MC cable but do I have the option???????
And if I can use MN wire, what about the basement area?????
I know fire ratings is everything, but I'm just having a rough time finding it and don't want to do all of the work and then have to rip it out...
THAT would piss me off,,,Thanks alot::confused:
 
In areas that are not required to have a fire-resistance rating as per the building code (check with your building code official), NM cable is an acceptable wiring method, as per 518.4(B).
To adequately answer this question, it must first be determined whether there are any areas that require a fire-resistance rating, such as fire-rated corridors used as legal means of egress, etc. Type of construction and travel distance to exit are some items a building official would be interested in. If there are no required fire-resistance ratings, NM should be fine. Also check for local code amendments that may be more stringent than the NEC. :smile:
Welcome to the forum.
 
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