Norcold 121x refigerator

We have run ours with our Xatrex Prosine 2.0 (2 KW pure sinewave) without trouble except that the 420 Watts (nominal) of solar panels don't keep up with it. A 450 Watt load at say 13.8 volts is a 32.6 Amp draw. It takes a lot from your battery. Depends a lot on what you can get from the vehicle alternator.

It is a 4 door 12 cu. ft. 120V/propane fridge.

Uses two (2) 120V AC heating elements..........225W ea. (450W total)

So a 600W inverter would power it for AC use if Ice Maker is turned OFF (It draws almost 200W total)

Moved from Forum Technical Support

600 watts would do it. I believe they draw 450 watts.

Most everyone run them on propane while traveling.

I am just taking a guess, but I would say that your RV refrigerator would not be a candidate for running on a device that converts 12 volt DC to 120v AC. Your refrigerator uses resistive heating to turn liquid ammonia to a gas. The current draw would too high. It would exceed your batteries capability.

Might want to post this in the proper forum might get more help that way