Methodology guide
Limits, outdoor/CO/backfeed rules, and when to stop shopping this ladder.
Calculator
Generator watts size calculator
Enter continuous and surge watts. Get an 1800 / 3200 / 6800 W class or NO_MATCH. Outdoor use only; never backfeed house wiring; CO risk indoors.
Result
Worked checks: 800/1200 → 1800 · 2000/3500 → 3200 · 4000/5000 → 6800 · 8000/10000 → NO_MATCH. classLbs uses running-watt class ids for CTA matching.
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