What is the common use for a junction box in electrical systems?

A junction box is primarily used to connect wires and protect splices. It serves as a safe enclosure for wire connections, enabling multiple wires to be joined together securely while preventing exposure to environmental factors and reducing the risk of electrical shorts or potential hazards. The junction box also keeps wiring organized and accessible for future maintenance or modifications.

The role of protecting splices is crucial, as improper connections can lead to overheating or electrical failures. Additionally, junction boxes are designed to meet safety codes and regulations, ensuring that the electrical connections within them are made safely and are less likely to pose any electrical hazards.

Though the other choices touch on relevant concepts, they do not accurately describe the primary function of a junction box. For instance, providing insulation is not its primary purpose, and while it may house wiring, it does not solely act as a fuse box or solely house conduits. The focus on connecting wires and safeguarding splices encapsulates the essential function of a junction box in electrical systems.