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What Can My Portable Generator Run?

Check a portable generator's running and surge ratings against the appliances you want, and see exactly which combination fits.

Inputs

Inputs and assumptions

Result

Surge the generator must supply
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Continuous headroom left
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Surge headroom left
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Continuous capacity used
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What to check

  • Generator continuous and surge ratings from the manual
  • Appliance nameplate or measured starting watts

Related calculators

Screening-grade sizing. Manufacturer load-acceptance curves, ISO 8528-5 transient limits, and the adopted electrical code edition govern the final selection; an engineer signs off before hardware is ordered.

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