What is the purpose of a junction box in electrical installations?

The purpose of a junction box in electrical installations is to connect electrical wires and provide a protective enclosure for those connections. Junction boxes are critical components in electrical systems because they serve as hubs for wire connections, allowing for changes in the circuit layout or extending electrical service to additional outlets. They protect the connections from physical damage, moisture, and dust, which helps prevent electrical hazards such as shorts or fires. Additionally, the enclosure provides a safe space to make connections, ensuring that they are not exposed.

Options that discuss distributing power or converting AC to DC involve different functionalities that are not directly related to the primary role of a junction box. While junction boxes may indirectly support circuit distribution by housing connections, their main purpose remains focused on safety and protection of wire splices. Similarly, circuit breakers are devices designed specifically to interrupt the flow of electricity in case of overloads or faults, which is distinct from the junction's role in connecting and protecting wires.