30 amp generator with 12 gauge wire?????
Ok, have a quick question for you electrical guys. I had to pull my Onan 4000 generator for some landing gear work. Noticed that the AC feed wires are 12 gauge and about 6' long before a junction box ...
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john&bet wrote:RJsfishin wrote:This will probably get me booted, but here goes. You are completely wrong. The NEC says that you can not use a 30amp c/b on 12awg. Period. And 10awg can not have a c/b larger than a 30amp. Oh, and by the way I am not a "wannabe electrician" as you call some people. Statements like yours get me rialed up.
14 ga will carry 30 amps up to 4 ft
12 ga will carry 30 amps up to 8 ft.
Don't need no wannabe elect tech to tell you,...just look at a chart w/ ga and amps, and length of wire,
Oops, excuuuuuuuuse me, 12 ga will carry 30 amps for only 6 ft
"The NEC says that you can not use a 30amp c/b on 12awg. Period."
Not correct. As I stated previously an engineered system does not fall under the requirements of the NEC. It is not uncommon to find wire sizing and circuit breaker sizing that does not meet NEC requirements in engineered/designed systems.
