I have successfully winterized my trailers by draining all of the fresh water and hot water tanks. Then connecting an air compressor up to the 'city' water connection set at 40 psi. I blow starting the closest faucet to the inlet and work my way out ...
Down rating to a 35 Amp converter may not be an issue. Particularly if you camp plugged in. Where the 55 Amp pays off is for boondocking and only run your generator for short periods and need the converter to bring the batteries back up in the shorte...
