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Plenum rated romex

I am a homeowner with little electrical knowledge. Is Plenum rated romex or other similar wiring solution made?
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Posted 2016-11-18T15:39:38+0000  by acpete48317 acpete48317
Hello acpete48317.  Welcome to the Community!

Romex is a brand of electrical cable used in home wiring.  It comes in various gauges, and 2 types.  One is called NM-B cable, the most common.  NM-B is for dry, in wall runs to electrical boxes.  The other type is called UF, for underground feed.  It can be used for buried runs from one building to another.  Most commonly from a home to a detached garage as one example.

These cables meet national electrical codes, but in many areas are not allowed by local codes.  While you will find "plenum" rated ethernet cable, (CAT 5, 5e or 6 for example), there is no equivalent for 120 volt home wiring.  You cannot run 120 volt house power through duct work.

Some Home Depot stores carry an excellent  Gardener Bender book on home electrical wiring. 

Wiring Simplified 40th Edition

In addition, there are many other books available that you will find very useful to learn the basics of DIY electrical work.


Posted 2016-11-18T16:07:35+0000  by Chris_HD_CHI
 By plenum I assume you are referring to some type of air duct or return in your home, which you are going to use to facilitate running the cable.  As Chris said, NM-B cable (aka Romex®) can NOT be used in a plenum.   The problem with NM-B is that if the jacket burns, it produces  toxic gases whose spread is facilitated by the duct.  You can use a special type of MC cable but you're not going to find it at the local Home Depot.  You'll need to contact a electrical supply house but you may have to buy the entire coil (250').  Southwire calls it "Duraclad" and other companies make a similar product.  NEC article 300.22(c) covers what's allowed and not.

As Chris also said, Wiring Simplified is a great book for the DIYer.
Posted 2016-11-19T02:50:52+0000  by Adam444
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