What is the NFPA 110 lighting requirement for Level 1 or Level 2 Emergency Power System EPS equipment locations?

Level 1 or Level 2 EPS shall be provided with battery-powered emergency lighting if indoors. If the equipment is located outside, there is no lighting requirement for the units that do not include walk-in enclosures. This battery-powered lighting ensures that personnel can safely see to access, operate, troubleshoot, or maintain the critical EPS equipment during a power outage when the normal building lights would be off. This is essential for managing the emergency power system precisely when it is needed most.