House Wiring NM Wire Gage For 30 Amp Breaker Quest. ?

Mar 27, 2005 4 Replies

Hello:



For the standard Copper NM interior house wiring:



Am I correct than for (any) circuit breaker labeled 30 amps, the minimum gage of wire going to it should be # 10 AWG ?



Thanks, B.


You are indeed (correct).

[Now let's see who will trot out Art. 240-3 exceptions...]

Jim

Per 2002NEC 240.4(d), YES. 10# for non 240.4(e-g) applications, 10 AWG can be used on 30 amp circuits.

Now just summerizing what the NEC says, so read for yourself if you are serious about learning more.

hth,

tom

Oops, forgot to say copper. If you have alumium, then t310.16 says

8#.

hth,

tom

This is Turtle.

Yes as to looking at any wire guage chart but you could possibly find a no if you researched hard enough of the NEC code to find a flaw in your application. So Yes if you don't like to arguee.

TURTLE

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required