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Why Use Self-Powered Exit Signs? Exit signs are intended to guide people to safety in an emergency. What would happen if, during an emergency, the exit signs became invisible? That could be disastrous. Although electric exit signs exist, it is usually a better option for exit signs to be self-powered. This helps maintain illumination if the building loses power and can help buildings remain compliant with regulations. Self-Powered Exit Sign Regulations The National Fire Protection Association (NFPA) dictates the standards for the illumination of self-powered exit signs in the USA in the Life Safety Code. It sets out the following...