What is the purpose of a junction box?

A junction box serves an essential role in electrical systems by protecting and containing electrical connections and splices. It is designed to house multiple wires and connections safely, preventing them from exposure to the environment, which could lead to shorts, fires, or electrical shocks. The structure of a junction box ensures that all wiring is organized and insulated, providing a safe and compliant means of managing connections between circuits.

Additionally, using a junction box facilitates easy access for future inspections or modifications, ensuring that electrical systems remain safe and functional over time. While other functions related to electrical systems are mentioned in the other choices, they do not encompass the primary purpose of a junction box, which is to secure and protect the electrical connections it contains.