Greetings all, I've recently installed a breaker box in my shed and GFCI outlets however, every time I turn on my air compressor it trips the breaker. I have a 20amp breaker feeding the GFIC line side and an additional regular outlet being fed from the GFIC load side (which is where I have the air compressor plugged in. Recently I changed the circuit breaker from a 10 amp to a 20amp hoping this would help...it did not. The only other thing I can think of is that I don't have an actual grounding wire in the ground to provide a true ground, can this be my problem?? Your advice or suggestions would be greatly appreciated.