What is the primary purpose of a junction box?

The primary purpose of a junction box is to provide a safe enclosure for wire splices and connections. Junction boxes are essential components in electrical systems as they protect electrical connections and prevent accidental contact with live wires. They help ensure the integrity and safety of the electrical connections by containing the splices, reducing the risk of short circuits, and maintaining proper insulation.

In addition to protecting the electrical connections, junction boxes also provide easy access for future maintenance and modifications to the wiring system. By housing connections in a structured way, they help keep electrical installations organized and compliant with safety standards outlined in the National Electrical Code (NEC).

The other options represent functions that are not the primary purpose of a junction box. While junction boxes can be utilized in conjunction with lighting and ceiling fixtures, their main function is to safeguard connections and splices rather than to provide lighting or support fixtures and circuit breakers.