What is the function of junction box?

A junction box is an electrical enclosure used to protect and organize electrical connections, such as wires and cables. Its primary function is to house and secure these connections, preventing exposure to moisture, dust, and physical damage, while also providing a safe environment to prevent electrical hazards. Junction boxes can also facilitate easier troubleshooting and maintenance of electrical systems. Additionally, they often include features for grounding and may provide space for splicing wires or accommodating additional circuits.