What is the maximum weight of a luminaire permitted to be hung directly from an outlet box in a ceiling, unless the box is otherwise marked?

• A. 25 pounds
• B. 50 pounds
• C. 75 pounds
• D. 100 pounds

Answer: (B)

Ceiling outlet boxes are listed with a specific weight rating for the luminaires they can support. A standard ceiling box is rated to carry up to 50 pounds of luminaire weight when a fixture is hung directly from it. If the box is marked for a higher load, you may hang a fixture up to that marked weight, but otherwise you must assume 50 pounds. For heavier fixtures, use a proper mounting method or a fan-rated/box-rated support attached to the structural member to safely bear the weight. This is about matching the box’s listed capacity to the actual load to ensure safe installation.