Covers emergency lighting and power equipment for use in unclassified locations and intended for connection to branch circuits of 600 volts or less. Such equipment is intended to supply automatically illumination or power or both to critical areas and equipment in the event of failure of the normal supply, in accordance with the National Electrical Code, the Life Safety Code, and the International Building Code. Examples include exit signs, emergency luminaires, unit equipment, central station battery banks, and automatic load control relays. Also covers auxiliary lighting and power equipment for use in unclassified locations.