what type of wiring do you have to use if you are framing with metal studs.?

Question

I am trting to do the electrical wiring for my unfinished basement. I want to make sure that I am not violating any codes.

Answer 1

They are right romex and thhn should be fine. But know that cities can and often do have different codes, so check with your local office about the codes in your area. And be leery of an employee at a hardware store that will tell you the code requirements. Firstly they shouldn't be. Secondly, they are probably wrong.

Answer 2

You can use type NM (romex) if you use listed and approved grommets or bushings where it passes through the metal studs to protect the wire. 2005 National Electric Code 300.4. State and local codes may vary on this.

You cannot use individual THHN wires unless they are inside a conduit of some type. The people who told you to use that method are dead wrong. Article 300.3

When I install the electric circuits in metal studs, I use type MC cable assembly. That is a flexible metal conduit with the wires already inside, and is approved for that use without putzing with bushings or skinning up the wire. Article 330.

You can also use a similar cable assembly called AC. Article 320. But I think MC is slightly better.

Don't take electrical advise from untrained and unqualified people. Email if you need more help.

Answer 3

Depending on where you live, the codes are different. I recommend conduit. Everything should be in conduit. If there is ever a problem or you want to upgrade a circuit, you can always remove or add new wires.

Answer 4

Standard romex or thhn wiring should work fine. You do need to install plastic grommets so the studs don't cut into the wiring.

Bob Villa is the bomb!

Answer 5

you can still use romex wire