A ceiling fan that weighs ___ pounds or less can be supported by a specially identified outlet box.

The appropriate weight limit for a ceiling fan that can be supported by a specially identified outlet box is relevant to the safety and stability of the installation. Ceiling fans generate significant torque and can cause stress on the mounting hardware and electrical connections.

When considering the weight limit, it is important to adhere to the National Electrical Code (NEC) guidelines. Boxes designed specifically for fan support have to meet certain specifications to safely carry the load imposed by the fan during normal operating conditions, which includes potential movement caused by wind or vibrations. Therefore, outlets that are identified specifically for ceiling fan support can typically accommodate fans weighing up to 70 pounds.

Choosing a higher weight limit like 80 pounds exceeds the standard specifications, which may compromise safety if the weight were to be a factor. The distinction of specifying a weight limit of 70 pounds aligns with common practices and ensures that a ceiling fan, even at its heaviest under normal operational parameters, can be securely mounted without risk of failure.

In summary, the correct answer of 70 pounds reflects the acceptable and safe weight limit set by electrical codes for ceiling fan installations in special support boxes, ensuring that the structure can properly hold the fan during regular use.