What impact does a GFCI device on a circuit have when an electrical worker contacts an energized part?

A Ground Fault Circuit Interrupter (GFCI) device is designed to enhance electrical safety, particularly in environments where electricity and water may coexist, such as kitchens, bathrooms, and outdoor areas. When an electrical worker contacts an energized part, a GFCI detects any imbalance between the outgoing and incoming current on the circuit it protects. If a leakage of current occurs, indicating that electricity may be flowing through an unintended path (like through a person), the GFCI quickly interrupts the circuit, cutting off the power.

The primary benefit of a GFCI is that it significantly reduces the likelihood of electrical shock by disconnecting the power before a harmful current can flow through a person. This rapid response minimizes the risk of severe injury or fatality. Therefore, the correct answer highlights that when a worker contacts an energized part, a GFCI device reduces the likelihood of shock and acts as a safeguard against potential harm.

The option that indicates the GFCI only impacts severity neglects the essential role it plays in preventing exposure to dangerous electrical conditions, as it directly impacts the likelihood of electrical shock occurring in the first instance.