Strange ground fault

[twindman]

I had the rig hooked up to a 30A plug at home. Ran it most of 24 hours with a 8 hour night time break. No problem with the Progressive system. Then at around 2 pm, wife tells me I got no electricity! I check the Progressive and it had a PE2 - no ground - so it had shut things down. I finally unplugged the cord and plugged it back in and all was well.

Any ideas? Oh, the AC had been running for 8 hours or so at 85-95 degrees (here in AZ).
Thanks.

[BB_TX]

First guess would be a loose ground connection either in your power cord or in the outlet you are plugging into.

[Foldbak]

Agree, check the plug/outlet and the trailer receptacle.