8000 watt generater only actually generates around 33 amps per leg at 240 volt (which most house backups do). As long as the homeowner is not attempting to run any big drawing equipment such as AC, welder, air compressor, hot tub, etc. that generator will do the trick. You can run all your lights, outlets, and heat (gas or lp) with it and keep your beer and food cold no problem.