They are perfect size for your Average RV. I Have a 5000 watt powermate That i use to use on a bus conversion. I Ran 2 window unit AC units, Dorm size fridge, TV, Stereo, all sorts of lights inside and outside the bus and even a blow dryer at the same time . The 3500 could easily pull your home fridge and give you several lights and other house hold items at the same time during an outage .