Thanks everyone, for your replies. I had a licensed electriction install that setup for my compressor, but surely would not want to have him do my eventual RV 30 amp.
I think I will use his 30 amp breaker and 10 AWG wire to wire to a 30 amp RV box myself, when the time comes.
I think for now, I will just plug in at the 15 amp outlet on the front of my garage, since I will only run the fridge prior to travel. Doug says 15A is all I need, and it will be handier to use.
I would not try to run my 15,000 BTU AC, on the setup I have. I do have to say again, that the compressor plug-in is 121-122 volts on the meter ( no question about it).
Thanks again everyone, for your help!
Jerry