Check an existing battery/unit-equipment runtime against the common 90-minute code minimum, or size the required battery capacity for a target duration with aging, DoD and inverter-efficiency derating.
NFPA 101 §7.9.2.1 / NEC 700.12(F) — 90-minute common minimum duration
Generated
For preliminary engineering use only — always verify results against project-specific standards and a qualified engineer's review before use in a real design.