Bill Dufour
02-18-2023, 1:48 PM
I have a 30 amp two pole gfci I installed in a shop panel. Never used that outlet before the other day. It ran my VFD all day long as long as nothing was turned on beyond warming up the electronics. As soon as I started the motor it ran for about five seconds then breaker tripped out.
What really surprised me is when I plugged in my air compressor to the gfci outlet. The contactor coil would not pull up and energize the motor. I pushed the contactor closed with a wood stick and the motor ran for about one minute before breaker tripped out. Simple contactor not even a transformer. The coil may be 120 volt not 240?
Both machines still work fine on a non gfci outlet. I suppose the gfci may be bad but I will just install a regular type breaker. The gcfi is something I found used so it may have been bad when. I got it. but square D QO breakers are one of the best.
Bill D
What really surprised me is when I plugged in my air compressor to the gfci outlet. The contactor coil would not pull up and energize the motor. I pushed the contactor closed with a wood stick and the motor ran for about one minute before breaker tripped out. Simple contactor not even a transformer. The coil may be 120 volt not 240?
Both machines still work fine on a non gfci outlet. I suppose the gfci may be bad but I will just install a regular type breaker. The gcfi is something I found used so it may have been bad when. I got it. but square D QO breakers are one of the best.
Bill D