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Household calculator

Inverter Size Calculator

Use this calculator to choose a practical inverter size after accounting for running load, startup surge and margin.

Household calculator

Inverter Size Calculator

Plan inverter watts and VA with motor surge and reserve margin included.

Result

Surge-adjusted load
1,400 W
Recommended inverter
1,750 W
Approximate VA rating
2,188 VA

Motor surge varies widely. Check compressor, pump and refrigerator startup requirements before buying.

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