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With the exception of private residences, most occupancies and facilities are required to provide emergency lighting. National, state, and local building codes, including the NEC, the NFPA's Life Safety Code (LSC), and OSHA, require reliable and sufficient emergency illumination for all commercial, industrial, and institutional buildings in the United States. In the event of an emergency situation, such equipment should provide continuous illumination for a minimum of 90 minutes to allow people to exit a building through passageways, corridors, stairs, ramps, and escalators. The illumination from emergency lighting should be designed to safely guide occupants to the nearest path of egress and prevent injury. Emergency lighting equipment can be purchased wholesale from a variety of sources.
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