Well...I installed the inverter the other weekend and tested it after isolating it from shore power with a recepticle plug tester. It showed "open ground".
I must say that I have been relying on my friend for help who has experience installing a 3K inverter in his Motorhome and who has designed and installed 4 solar panel systems.
We must have overlooked something. The system on shore power with the inverter isolated tests OK and works just fine.
We did replace the single 20 amp breaker with a double 20 amp breaker. Originally it was marked 20 amp air conditioner. Now 1 is connected to the original A/C and the other is dedicated for the inverter.
Perhaps the inverter is not grounded properly? How would I check that out?
My family and I are actually staying in the rig now... so I might be able to go over it.
Any ideas or suggestions would be appreciated....thanks!