30AMP Service

[Thunderbolt]

This is what I use. Plug RV into one side and use other side for outdoor appliance or for running electric heater inside during cold weather. The CG we visit regularly in FL only had 50 amp hook ups. I made a 20 foot 20 amp cord with a weatherproof box on the end with 2 20 amp GFI outlets that way I don't overload the rv system.
Epicord Dogbone RV Power Y Adatper Cord 10/3AWG with 50 Amp Male Plug To (2) 30 Amp RV Female Connector with Light(3-Feet)

[mingdiaz]

Two-bits addition. Keep your connections for the adaptor and service cable clean. Inspect them and the CG sockets before connecting. Then stop by and feel the connectors for heating every day you are connected, especially when pulling power for AC, hot water, heater, or heavy kitchen duty. Like tires, brakes, hitch, and lights, make it part of your daily inspections.