The residential fridge will be closer to 100 watts when it cycles on and about 10 watts when off. It will be off more than it is on but using a 50 percent duty cycle is a safe bet. We are avid dry campers and have no problem with our residential fridge although we have a more robust solar system. A typical 22 cubic foot side by side uses about 500 Kwatts per year or around 1360 watts per day. Concur with 1800 watt sine wave inverter although some on this forum successfully run their samsungs on modified sine wave. In my opinion if you opt for residential fridge then you should have a back up generator even if it us just a 1000 watt genny to run a charger for the battery's. You would never regret going residential. Best update we ever made.
