What GeneratorSizer is for

Generator sizing calculator for homeowners who need to know exactly what wattage keeps the house running during an outage.

Not a commercial paralleling-switchgear manual. Transfer-switch work is licensed-electrician territory.

This map lists pages that exist. It is not a keyword dump and it does not treat every article as its own niche. The calculator (or the pack) is the hub. Guides sit under one pillar each.

Load math

What actually draws watts when the grid dies.

• Generator size calculator — Add appliances. Get running watts, surge, 20% headroom, fuel.
• Outage cheat sheet — Printable fridge / well / furnace stack.
• Fridge & freezer — Why food preservation is a 1,000–1,500 W job.
• Well pump watts — Running vs starting vs locked-rotor.
• Sump pump watts — The other motor that kills undersized inverters.

Machine class

Portable, standby, or whole-house — pick from the load, not the brochure.

• Portable vs standby — Which wins for this house.
• Whole-house sizing — Central AC and the jump to 10–12 kW.
• Best portable generators — Ranked by the sizing math, not Amazon stars.

Hookup

Getting power into the panel without killing a lineman.

• Transfer switch sizing — 30 A vs 50 A, interlock vs ATS.
• Find a pro — Vetting checklist for installers.

Scenario sizes

Same math, different jobs.

• RV generator size — Coach loads, not house loads.
• Generator for a well pump — Machine class after you know the watts.

Sisters

Adjacent math lives next door, not here. SolarSizer · Battery Bank Sizer