For ceiling fans, the weight threshold that requires independent support from the outlet box is:

• A. 40 pounds
• B. 65 pounds
• C. 75 pounds
• D. 50 pounds

Answer: (B)

Heavy ceiling-mounted fixtures like fans put a real downward load on the ceiling support, not just on the wiring. The outlet box and the screws used to attach it aren’t meant to carry that kind of weight by themselves. When a fixture’s load reaches a level where the box’s rating would be exceeded, the support must come from the building structure, not from the box alone. That means using a mounting brace or crossbar that is fastened to a structural member (like a joist) and a box rated to carry the fixture’s weight, or a fan-rated box that is properly supported. By transferring the load to the structural member, you prevent the box from pulling out and reduce the risk of damage or injury. So, for ceiling fans, independent structural support is required once the weight reaches the defined threshold, with hardware rated for that load and installed into the structural framing.