RV Park Outlet Ground

[Harold Sears]

With my coach plugged into a 50 amp park outlet, the 120V outlets in my coach show good ground when tested with a circuit tester.

My question is: If the ground in the parks electrical box is not connected, will the outlets in my coach indicate no ground when tested with a circuit tester?

[TechTalk]

We recommend that you conduct the grounding test at the source (i.e., the park's electrical outlet). Even than, you can't be absolutely sure of a good 'safety' ground because a possible loose, intermitent connection or inadequate grounding source, will indicate "ok" even at low current flow. This issue is complicated because a ground is really a safety backup. Even with a faulty ground, no problem will be experienced if everything is functioning correctly with no short circuits.