What is a key difference between ground-fault circuit interrupters and ground-fault protection of equipment?

Ground-fault circuit interrupters (GFCIs) and ground-fault protection of equipment (GFPE) serve different protective roles related to electrical safety.

GFCIs are specifically designed to protect individuals from electric shock. They monitor the current flowing through the circuit and can quickly disconnect the power if they detect an imbalance that suggests current is flowing through an unintended path, such as through a person. This feature makes GFCIs vital in areas with a higher risk of electrical shock, such as bathrooms and kitchens.

On the other hand, ground-fault protection of equipment focuses on protecting electrical systems and equipment from ground faults that could cause damage. GFPE devices help prevent equipment failure and fire risks by detecting ground faults and interrupting the circuit when a fault is detected. This is particularly important in settings where equipment may be exposed to moisture or where high value electronic equipment is used.

Therefore, the distinction lies in their primary functions: GFCIs are aimed at protecting people from electric shock, while GFPE is intended to safeguard equipment from ground faults that could lead to failure or compromise safety systems. This clear differentiation reflects how each type of device is utilized in both residential and industrial settings to enhance electrical safety.