Originally Posted by Bobs A Class
OK, here is why I need 40' of extension. Actually, I have a 50 amp MH. I will use it to operate my refrigerator for a day and a half before I leave on a trip. I can't get my rig close enough to plug in without one. Don't intend to run anything else, except a light or two while loading up.
For that light a load, a 12ga 50' 15A cord would be adequate. The adapter at the RV end gets weird though: Connect both sides of 1 phase to a single hot lead.
If you really wanted minimal load on the cord:
- Plug the RV in for 10 hours to for the charger to go from bulk to float mode.
- Run the fridge on propane.
You'll only need about 1.5A to 2A @ 120VAC to run the converter for the appliance controllers, the float charger and lights as needed.