Find the true startup surge for any motor, compressor, or pump.

1 · Your appliance

Running watts (from nameplate) Load type

2 · Startup demand

Starting watts

Surge above run

Min surge rating

Surge multipliers are typical planning values; actual inrush varies by motor and start conditions. For air conditioners, check the nameplate LRA (locked-rotor amps) for the true figure. Estimates only.

Keep planning — related tools

Whole-home load sizer →

Size a generator from your real appliance load.

What can my generator run? →

Flip appliances on a live breaker-box gauge.

Transfer switch & wire sizing →

Safe switch amperage and wire gauge.