Hi Fred,
You said you used 6/3 wire to your shelter. Is there a ground wie in that cable?
Thanks, Sam
Sam, yes there is a ground wire. It is number 6 wire and contains a black, red, white, and a ground wire. White is the common and both black and red are 120 volt wires that connect to the 50 amp breaker. Search U-Tube for directions on installing yourself or you may want to just hire somebody.