Generator sizing
Σ load + surge currents + 25% headroom
What to power
Power
running: 650 W
1 125 W
- Peak (with surge)
- 900 W
- Devices
- 4
Fridge/pump surge currents are 2–3× running watts — take the max peak. A generator should run at 60–80% of rated: less means wet-stacking, more means overload. Inverter type for electronics, conventional is cheaper for heaters.