There is alot to look at when choosing a generator. In this case, its already chosen. A 4000 watt should be able to handle a refridge, a few lights, and a small furnace. Or you could power a microwave oven and a small airconditioner. You need to look at the the appliances and record their load(in watts). You can run a total of 4000 watts worth of appliances. I reduce that by 10% to prevent overheating. The load should be equal in the two 110w outlets. My 4 kw powers my shallow well pump or the other things.
The well pump or the electric hot water heater are usually the greatest draw in the house. Most will need a bigger generator than 5kw
I have two tractor mount generators but don't use them because the governors on my tractors don't stay as smooth and I'd rather wear out the generator engines than my tractor engines. Before using a generator, you should get an operators manual and check it out.
That generator has 3 plugs, 2 - 110v and 1 - 220v. You can use either.
Edited by boyscout862, January 15, 2013 - 11:55 AM.