Generator Fuel Tank Sizing Calculator

Instant tank sizing for 36, 48, and 72 hour runtimes

FAA JO 6980.11E CHG 2 Compliant

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Calculation Basis: All calculations at 75% facility load per FAA requirements. Diesel tanks sized to 90% usable capacity. Propane tanks sized to 80% usable capacity. Indoor installations include day tank capacity. Electrical data includes amperage, breaker sizing, cable sizing, conduit sizing (NEC Chapter 9, 40% fill) for both EMT (indoor) and Ocal PVC-coated RGS (underground), and maximum conductor length (3% voltage drop @ 208V) for selected voltage.