How does an earth leakage device enhance safety?

An earth leakage device enhances safety primarily by interrupting the current flow. This device detects any imbalance in electrical currents, which could indicate a fault, such as current leaking to ground. When such an imbalance is detected, the device automatically disconnects the electrical supply to prevent potential electric shock to individuals. This immediate interruption of current flow is critical in protecting people from the dangers of electrical hazards, including severe injury or fatality from electric shocks.

Grounding is indeed an important safety measure that helps to provide a path for electric current to safely dissipate into the earth, but the main function of an earth leakage device is its ability to detect and interrupt current flow in the event of a leakage, thereby serving as an effective safeguard in electrical systems. The other options, which involve increasing electricity supply or boosting voltage levels, do not relate to the operational purpose of an earth leakage device and could actually increase the risk of electrical hazards.