Standard for Installation of Fire Safety Devices based on Use and Occupancy Article 146-5

When installed in the following occupancy, exit indicating lamps and direction indicating lamps that are not located in stairways and slopes, shall be class A or B. The face illumination of exit indicating lamps shall be not less than 20cd or possess flash function. The face illumination of the direction indicating lamps shall be not less than 25 cd. The preceding restrictions shall not apply to lamps that are installed in hallways, and that are easily recognized within effective range thereof.1. Occupancy specified in article 12.2(1), 12.3(3) or 12.5(3).2. Occupancy specified in article 12.1(1 through 5, 7) or 12.5 (1) where the floor area is greater than 1,000 square meters.3. The exit indicating lamps adopted by occupancy specified in article 12.1 (6), shall possess flash or voice indicating function.The flash or voice indicating function of exit indicating lamps as prescribed in the preceding subparagraph shall comply with the following:1. Shall be installed in main exits.2. The lamp shall be linked to automatic fire alarm system.3. When the detector installed at the location of main exits toward evacuation direction is activated, the exit indicating lamps shall stop flash or voice indicating function.Direction indicating lamps installed in stairways or slopes, shall have illuminance not less than 1 lx on the surface of the stairway or slope.