Thanks for all of your help LArry. I have another question. It seems redundant to run both a 50 AMp ( which is bringing in 2 120 volt legs) and a 30 amp which is bringing in one 120 volt leg. It would seem there should be an adaptor that allows a 30 amp user to plug into the 50 amp outlet yet only pull off one of the 120 volt lines just like the 30 Amp. If that were the case this would save me a lot of money running a separate line for the 30 amp setup .Yes, at most of the RV parks in the USA. There's a nice pedestal for that available from several manufacturers. At our home RV park, it has a meter socket and a 50 amp outlet and double breaker, a 30 amp outlet and breaker and a 20 amp GFCI outlet and breaker. You can even get them with two setups, back-to-back for placement between two parking spots. Search for "rv pedestal with meter"