The generator will shut down if you try to pull to much from it. With no AC you should be able to run lights, pump, bath fan, radio/tv. Electric water heater or microwave might be able to run, but only if they're the only items running. Small appliances like toasters, toaster oven, coffee makers are ok but watch your total wattage.
Forget the AC of course.
Here's a nice wattage chart Champion has put together:
http://www.championpowerequipment.co...ence_chart.pdf
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2017 Ford F350 Super Duty 6.7 King Ranch Crew
Sold the 2016 Crossroads Sunset Trail Grand Reserve 32BH
2020 Grand Design Momentum 320G