How many watts does a Sump Pump (1/2 HP) use?

Running watts

1,050 W

Starting watts

2,150 W

Startup surge

+1,100 W

A Sump Pump (1/2 HP) draws 1,050 watts continuously once it's running, but its motor needs a brief surge of up to 2,150 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

Generac GP2200i
1,700 W run · 2,200 W start · ~$550
Honda EU2200i
1,800 W run · 2,200 W start · ~$1,150
WEN 56235i
1,900 W run · 2,350 W start · ~$430

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