Reference

Generator sizing reference

Worked running/surge examples and class checks for common US portable inverter screens.

Smallest class with running ≥ continuous AND peak ≥ surge.

Details

Outdoor only · CO risk · never backfeed house wiring.

Tools

800 ≤ 1800 and 1200 ≤ 2900 → 1800 class.

Details

Enter running_w 800, surge_w 1200.

Tools

Fails 1800/2900 peak; clears 3200/4200 → 3200 class.

Details

Enter running_w 2000, surge_w 3500.

Guides

Fails 3200/4200; clears 6800/10000 → 6800 class.

Details

Third class uses verified 6.8/10 kW inverter.

Reference

8000 > 6800 running ceiling → NO_MATCH.

Details

Do not force a 6.8 kW class for this continuous load.

Guides

Guides, calculator, and comparisons.