[rverdlm]

50A systems bring 50A 120V on 2 legs into your RV. You can have 100A @120V, or 50A @ 220V. Many of the big MHs actually are wired for 220V and can not work on a 30A system. I don't know of any 5th wheels that use 220V. I'm going to assume that you have a marine type plug on your Rv. I would by a short 50A to 30A cord that plugs into that plug. The reason I say this is that then you won't need to handle the heavy 50A cord when you plug into a 30A box. My experience is that most CGs that are large enough for a big rig will have 50A available, except in the NE. I carry my 50A cord, plus a 50A extension, 2 30A extension cords, a 50A to 30A with the marine plug and a 50A to 30A that goes on the end of the cord. My feelings are that I've bought an expensive RV and I don't want my enjoyment comprimised by being cheap on things to make hooking up easier. I think you'll be glad you have a 50A rv.