GenSize generator sizing

GenSize

A static outage-load calculator for homeowners comparing portable generator classes.

Formula

Running watts + largest startup delta, then 25% headroom.

2.2k4.5k7.5-8.5k9.5-12.5k

Outage load checklist

Sizing estimate only - confirm with a licensed electrician; never backfeed a panel.

Kitchen

Pumps and motors

HVAC

Heat and cooking

Medical and essentials

Electronics

Lighting

Laundry

Vehicles

Scenario answers

Data notes

Appliance values are conservative defaults; real equipment nameplates win. Motor and compressor surge values are tagged estimates.