What is a requirement for ceiling fan installation according to the NEC?

In accordance with the National Electrical Code (NEC), a crucial requirement for ceiling fan installation is the incorporation of a junction box. A junction box serves as a secure enclosure for the electrical connections related to the ceiling fan, providing a safe and stable point for the electrical supply to connect to the fan. This is essential because it helps prevent potential electrical hazards, such as shorts or overloads, and ensures that the fan is properly supported, especially since ceiling fans can be heavy and may generate significant vibration when in operation.

Using a junction box that is rated for ceiling fan support is also important in maintaining structural integrity and safety. It allows for the proper attachment of the fan's mounting bracket and ensures that the electrical connections are made safely and securely. The junction box typically needs to be mounted to a structural component of the building to ensure that it can withstand the weight and movement of the fan.

While other options may pertain to various installation considerations, they are not universal requirements stipulated by the NEC for ceiling fan installations. Therefore, the necessity of having a junction box is a clear and essential requirement in this context.