What certification should a fixture box have to ensure safe ceiling fan support?

A fixture box intended to support a ceiling fan should have a rating specifically designed for ceiling fan support to ensure safety and effectiveness. Ceiling fans can be considerably heavier than standard light fixtures, and they also experience dynamic forces due to their movement. The specific rating indicates that the box has been tested and certified to hold the weight and withstand the stress of operating ceiling fans, ensuring it will not loosen or detach over time. This certification is critical for maintaining the structural integrity and safety of the installation, as improper support could lead to fan failure or accidents.

Moreover, while other ratings such as a generic electrical rating may be important for general electrical safety, they do not address the unique demands posed by a ceiling fan's installation. Similarly, a weather resistance rating is relevant for outdoor applications but does not speak to the ceiling fan's specific support needs. Thus, a dedicated rating for ceiling fan support is essential for ensuring that the installation adheres to safety standards and provides reliable performance.