[DocP]

I have 2 of the 50 amp Hughes autoformers (both surge protector and voltage booster) - one for my 50 amp Cougar, and the other for my 30 amp camper. I went with the 50 amp model for my 30 amp camper based on the following information taken directly from the Hughes owner's manual:

"Match the Autoformer rating to your RV: If your RV has a 4-wire power cord, you should use a 50-amp Autoformer. If your RV has a 3-wire power cord, use a 30-amp Autoformer. Always use the highest amperage power source available. You can convert to a lower amperage outlet by using appropriate adaptors, for example: a 50-amp Autoformer can run on a 30 or 20-amp power source. Of course, you will be restricted to that lower amperage, but the Autoformer will boost the voltage when necessary. Be careful not to overload the lower amperage park power box."

My thinking was that if (when) I sell the 30 amp camper, I won't have to buy another unit if I upgrade to another 50 amp camper.