What can a 1,500 watt generator run?

These loads fit under 1,500 watts in WattSizer's conservative default model. Treat this as a screening list, then verify real nameplates and starting amps.

ScenarioRunningStartingRecommended
Portable power station size for CPAP overnight85 W85 W200 W
Portable power station for CPAP with humidifier overnight130 W160 W200 W
Apartment outage generator alternatives for fridge, router, and lights265 W765 W1,000 W
Backup power size for oxygen concentrator and phone590 W740 W900 W
Will a 2000 watt inverter generator run RV fridge substitute, router, and fan?265 W765 W1,000 W
Will a 2500 watt inverter generator run RV fridge substitute, router, and fan?265 W765 W1,000 W
Will a 3000 watt inverter generator run RV fridge substitute, router, and fan?265 W765 W1,000 W
Will a 3500 watt inverter generator run RV fridge substitute, router, and fan?265 W765 W1,000 W
Will a 4000 watt inverter generator run RV fridge substitute, router, and fan?265 W765 W1,000 W
Will a 4500 watt inverter generator run RV fridge substitute, router, and fan?265 W765 W1,000 W
Will a 5000 watt inverter generator run RV fridge substitute, router, and fan?265 W765 W1,000 W
Portable power station size for CPAP without humidifier and phone chargers for 8 hours85 W85 W200 W
Portable power station size for CPAP with humidifier, router, and phone for 8 hours155 W185 W300 W
Portable power station size for oxygen concentrator, lights, and phone for 8 hours590 W740 W900 W
Portable power station size for nebulizer and CPAP for 8 hours175 W205 W300 W
Portable power station size for wheelchair charger and CPAP for 8 hours335 W335 W500 W
Portable power station size for CPAP without humidifier and phone chargers for 10 hours85 W85 W200 W
Portable power station size for CPAP with humidifier, router, and phone for 10 hours155 W185 W300 W
Portable power station size for oxygen concentrator, lights, and phone for 10 hours590 W740 W900 W
Portable power station size for nebulizer and CPAP for 10 hours175 W205 W300 W
Portable power station size for wheelchair charger and CPAP for 10 hours335 W335 W500 W
Portable power station size for CPAP without humidifier and phone chargers for 12 hours85 W85 W200 W
Portable power station size for CPAP with humidifier, router, and phone for 12 hours155 W185 W300 W
Portable power station size for oxygen concentrator, lights, and phone for 12 hours590 W740 W900 W
Portable power station size for nebulizer and CPAP for 12 hours175 W205 W300 W
Portable power station size for wheelchair charger and CPAP for 12 hours335 W335 W500 W
Portable power station size for CPAP without humidifier and phone chargers for 24 hours85 W85 W200 W
Portable power station size for CPAP with humidifier, router, and phone for 24 hours155 W185 W300 W
Portable power station size for oxygen concentrator, lights, and phone for 24 hours590 W740 W900 W
Portable power station size for nebulizer and CPAP for 24 hours175 W205 W300 W
Portable power station size for wheelchair charger and CPAP for 24 hours335 W335 W500 W
Will a 500 watt power station run mini fridge, router, and LED lights?225 W725 W900 W
Will a 500 watt power station run router, laptop, and phones?155 W155 W200 W
Will a 500 watt power station run fan, router, and CPAP?170 W270 W400 W
Will a 500 watt power station run TV, router, and laptop?235 W235 W300 W
Will a 750 watt power station run mini fridge, router, and LED lights?225 W725 W900 W
Will a 750 watt power station run router, laptop, and phones?155 W155 W200 W
Will a 750 watt power station run fan, router, and CPAP?170 W270 W400 W
Will a 750 watt power station run TV, router, and laptop?235 W235 W300 W
Will a 1000 watt power station run mini fridge, router, and LED lights?225 W725 W900 W

Never operate a fuel-burning generator indoors, in a garage, on a porch, or near open windows. Use a listed transfer switch or interlock installed by a qualified electrician for home wiring, and verify actual device nameplates before buying equipment.