The lesson learned from this thread, and the many like it, is that most RV's & TT's run on 120v, and NOT 220v!
At home, I have the TT plugged into a 120v garage outlet, to keep the fridge cold all summer. (In the driveway, I'll hide an occasional growler, or 6 or 12 pack of a good craft beer in the TT, so that my son(s) don't find it!)
I keep the built-in 12v converter/charger off, as it tends to overcook the batteries, and instead keep the batteries topped off with the solar. The solar MORE than adequately supplies the fridge circuit board, occasional lighting use, the stereo (I use it when in the driveway for use in my backyard), and any of the parasite loads.
2014 RAM 2500 Laramie 4x4 Quad Cab w/Cummins Turbo Diesel, 2009 Rockwood 2607, and 3 'yaks!
300W of Suntech Solar, a Rogue MPT-3024 Controller, and a Xantrex PW2000 Inverter