Tip #23 - Don’t Stumble Around in the Dark
NFPA 110-2010: 7.3.1 The Level 1 or Level 2 EPS equipment location(s) shall be provided with battery-powered emergency lighting. This requirement shall not apply to units located outdoors in enclosures that do not include walk-in access.
Battery-powered emergency lighting must be provided for Level 1 and 2 Emergency Power Supply (EPS) locations. Units that are located outdoors in enclosures that do not require walk-in access are not required to have battery-powered emergency lighting.