Just ran into an "Open Ground" error using my Prog. Dyn. EMS
These were relatively new pedestals with only 15-20A receptacles.
Spent some time with a VOM trying to find a good pedestal but it seemed that most had ~10V between Neutral and ground. Others seemed to drift around a lot.
There should be solid 0V between neutral and ground at the pedestal, right?
Anyway, finally went to an older section of the park with 30A sockets, and the EMS is happy. Even when I use our 15A adapter, so I know it wasn't our adapter's problem.
This is the second time our EMS has alerted us to electrical problems on this trip to Eastern/Maritime Canada. Never had any problems before. Visitors beware.