How many watts does a Sump Pump (1 HP) use?

Running watts

2,000 W

Starting watts

3,000 W

Startup surge

+1,000 W

A Sump Pump (1 HP) draws 2,000 watts continuously once it's running, but its motor needs a brief surge of up to 3,000 watts to start. A generator has to cover that starting surge, not just the running load, or the motor won't start.

Generators that can run this

Predator 3500 Inverter
3,000 W run · 3,500 W start · ~$900
Champion 3400-Watt Dual Fuel Inverter (100263)
3,100 W run · 3,400 W start · ~$850
Champion 3500-Watt (100555)
3,500 W run · 4,375 W start · ~$450

Add more appliances in the full calculator →