Thanks for all of the advice, I really appreciate it.
@MYREDRACER- Those links are some good reading for sure. Helped me understand more than just my problem. Went and read several more of his articles. Now I know better how to read the pedestal wires with my meter.
@GOLDER_HVAC- I guess I wondered that too about my ground wire, and will read that out the way you suggest. I'll try unplugging my converter/charger when I try turning off circuits one at a time. Thanks for the good ideas. Our steps are insulated with mats, and might be why I never noticed it. I almost always have shoes on too.
@ROYB- That upper tester is the one I have but I haven't tried it on the pedestal yet with all of my adapters but I'm not sure it can test everything.
That bottom tester looks cool, might want to get one. I think with my multi-meter I'll be able to do the same for now.
@JON&BET- I've been wondering that too. I figured that if the wiring was correct in my RV that the electricity should go back straight through the neutral wires back to the pedestal and the ground was there for emergencies like lightning and stuff, or to prevent a shock. I thought that my RV's GFCI's would trip if this was a problem, but maybe not. The links that MYREDRACER above provided sugest that both the pedestal or the RV could cause this problem. I use 50A but I think I may also try temporarily plugging into the 30A or even the 20A circuit, which is a GFCI, so maybe that will trip and give me more information. I've used that 20A circuit before directly for some outside stuff so it should work and I know the TEST/RESET buttons on it work.
@Others, It was suggested, and I wish I could know, if the ground in the pedestal was good without having to wait for days, as there are no other spaces this weekend to move to, and probably not the easiest to get an electrician due to the holiday. Can it be tested with a multi-meter without having to take it apart? I'm thinking of using the Ohm meter like the test for my own ground cable as Golden_HVAC suggested but what to hook up too? Maybe the Ground hole in the receptacle to the metal on the pedestal, but what would that prove if the pedestal isn't grounded? Or is there a Ground Stake supposed to be in there?