[bobbecky]

Yes, a 50Amp RV service can be a 120/250v service, but it also can be a 120/208v service also. On an RV, you never use the 250v side of it, only the two 120v legs by themselves. Just wanted to add this information because we have been in several parks that are supplied by 120/208v systems. For people with a voltmeter checking the pedestal before plugging in (a very wise thing to do), they would freek out seeing 208 volts when they are expecting to see 240 to 250 volts. Actually, the accepted range of voltage can be anywhere from 114v to 128 volts on each leg to the neutral position in the pedestal, depending on how much load already exists and how far away from the transformer the pedestal is. Hope this helps.