Buy a 20/30/50 monument, some #6 direct bury cable, dig a trench, set the monument, bury the cable, connect to a 240V/50A breaker, plug in the trailer and you are done. You may need a short piece of PVC conduit and an LB at each end for a clean install. Do it right the first time and forget about it. If you decide to sell the house in the future this mod done correctly may be the difference between a sale at asking or discounting the sales price. Then again you the mod may be considered exactly like an ECM reprogram when reselling a gasser but you will not have to redo the RV circuit in the future because you got cheap now.
Randy
