What gauge wire do I use
Hello, I want to place a 30 amp breaker in the panel of my house and then run about 200 ft of uf-b cable to a 30 amp rv outlet that I will place near my travel trailer. I would like to have the ab...
Forum Discussion
The NEC requires that you use 10 AWG with a 30 amp breaker. This is a safety requirement so that the wire doesn't burn up before the breaker trips. The NEC also makes recommendations on how much voltage drop one might allow and it's never more than 5%. If you are unable to know what the load really is, I guess you just have to assume that it's going to be 30 amps and go with 6 AWG wire. If you determine what the load actually is, then you can determine if 8 AWG is big enough. Either way, the wire is probably going to cost more than you would like.
