Pedestals open grounds.

DrewE wrote:

Acampingwewillgo wrote:
Just another thought, something I experienced not long ago and coincidentally at a Thousand Trails Park also. I was getting intermittent open ground/open neutral on my 50 amp plug in Surge Guard, I was also getting an open ground alarm on my plug in voltage/frequency meter. Long story short, someone's motor home on the same pedestal loop as mine was at fault. As soon as he left(un plugged) all the adjacent pedestals had no issues. There was a problem in his electrical on his RV.

That should not be possible if things are wired properly (i.e. for a plugged in motorhome, even one with bad wiring, to cause the neutral/ground bond to be bad). The problem would have to be with the actual neutral/ground bond being poor or the ground line having a bad connection. If his RV was faulty in that it leaked power to ground, that would cause a high impedance bond to show a potential difference between the neutral and the ground, which is what the EMSs are looking for...but the poor bond exists and is a safety concern regardless of whether the electrically leaky RV is plugged in.

Of course, a motorhome that has current returning via the ground lead has a ground fault somewhere in it and is also faulty and dangerous...but that, in itself, would not cause the rest of the system to appear bad.

I'm sure there was more than one fault occurring but I can only report what happened, that particular RV left and all the pedestals on that loop worked again without sounding an alarm and without showing a fault on my home brew tester.