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

The function of a junction box in electrical installations is indeed to house and protect electrical connections and splices. Junction boxes provide a safe enclosure for wiring connections, which helps prevent accidental contact with live wires and minimizes the risk of short circuits or electrical fires. They also allow for the organization of wiring, making it easier to manage and troubleshoot electrical systems.

Inside a junction box, wires can be spliced together and secured, providing a stable and secure environment for connections. This enclosure helps to maintain the integrity of the electrical system by protecting wires from physical damage, moisture, and other environmental factors that could lead to degradation over time.

The other choices do not accurately represent the primary role of a junction box. For example, increasing current flow, measuring voltage, or reducing electrical waste are not functions associated with junction boxes, as these relate more to the characteristics of electrical components or devices rather than to the protective and organizational role that junction boxes fulfill in electrical installations.