I have a 240v (single phase) outlet in my garage with a 30 amp breaker (10/3 wire) that I use for my miller 175 mig welder (230v 19.5amp @60hz) and Iwanted to upgrade my compressor to a 240v 15amp model. I realize that if both are running off that breaker I will exceed the 30 amps by 4.5 amps. My question is will it still work based on the fact that I seldom fire up the mig welder to it's highest setting and run the compressor at the same time? thanks in advance. walt ps. I'm hoping to change my panel over to a higher service, then run another 230 line out so that it would solve these problems in the future.