Answer
Nov 11, 2025 - 11:32 AM
The NFPA (National Fire Protection Association) guidelines for emergency lighting, primarily outlined in NFPA 101: Life Safety Code, require that emergency lighting must provide illumination for at least 90 minutes in the event of a power failure. The light must deliver a minimum of 1 foot-candle, or10.8 lux, at floor level along the path of egress to ensure safe evacuation.
