Portable vs standby generators
Start with the same load calculation. Then compare connection, automation and outage needs.
| Question | Portable / inverter | Home standby |
|---|---|---|
| Operation | Usually placed and started for the outage. Follow outdoor placement instructions. | Permanently installed; suitable systems start automatically. |
| Sizing check | Continuous watts, surge, fuel-specific output, receptacles and each supply leg. | Simultaneous demand, motor starting, fuel supply and managed loads. |
| Connection | Suitable transfer equipment installed by an electrician; never a wall-outlet backfeed. | Installed transfer switch and permitted connections. |
| Useful example | Selected fridge, lights and furnace loads may fit a modest portable capacity. | Central AC plus broad household loads may lead to a standby discussion. |
| The decision | Our 8 kW category boundary is a shopping convention, not a product or code limit. | A 200-amp panel does not imply a 48 kW generator requirement. |
Bring the actual inputs.
Compare bids that identify the measured demand, the exact model, operating conditions and installation requirements. A headline capacity or broad household average is not enough to choose equipment.
Planning estimate. A licensed contractor must confirm final size and installation. Electrical work needs a licensed electrician.
Sources and methods.
Read the model methods and assumptions and primary source register. The linked calculators show their working and relevant sources for your selected inputs.