Which of the following is true about the function of a ground wire?

The correct choice highlights the essential safety role that a ground wire plays in an electrical system. The ground wire provides a direct connection to the earth, which serves as a safety measure. In the event of a fault or malfunction, such as a short circuit, the ground wire offers a safe pathway for excess electrical current. This can help prevent electric shocks, reduce the risk of electrical fires, and protect both people and property from potential hazards arising from stray electrical currents.

Grounding essentially stabilizes voltage levels and ensures that all parts of the electrical system are at the same potential, significantly enhancing safety. It is an important part of an overall electrical system’s safety plan, allowing any fault current to be diverted away from users and sensitive equipment.

Understanding this function underscores the importance of proper grounding in residential electrical installations to maintain a safe and reliable electrical system.