The visual notification appliance should be located within how many feet of the end of a corridor?

• A. 15 feet
• B. 10 feet
• C. 20 feet
• D. 25 feet

Answer: (A)

Visual notification devices are placed to ensure immediate visibility for occupants as they reach the end of a corridor. The rule sets a maximum distance from the corridor end to a visual appliance to guarantee someone at the far end will see the strobe promptly, even in smokier or obstructed conditions. If the device were farther than that limit, the end of the corridor might not receive a clear visual cue quickly, delaying evacuation. Therefore, the maximum allowable distance is fifteen feet, which is why that choice is the best answer. Distances greater than fifteen feet would not comply, while shorter distances (like ten feet) would still meet the requirement but are not the threshold being tested.