Ground-Fault Circuit-Interrupter (GFCI)

Definition

A device that supplies power like any receptacle but also monitors the amount of incoming and outgoing current. If the entering current does not equal the leaving current, indicating current leakage, the GFCI instantly opens the circuit.

Purpose

GFCIs protect against electrical shock by detecting ground faults and quickly shutting off power to the affected circuit.

Examples of Use

• Bathrooms and Kitchens: Installed in outlets near water sources to prevent electrical shocks.
• Outdoor Outlets: Providing safety in exterior environments exposed to moisture.
• Construction Sites: Ensuring electrical safety in temporary power supplies.

Related Terms

• Circuit Breaker: A device that interrupts the flow of electricity in a circuit as a safety measure.
• Ground Fault: An unintended electrical path between a power source and a grounded surface.
• Electrical Safety: Practices and devices designed to prevent electrical hazards.

Notes

GFCIs should be tested regularly to ensure they are functioning correctly. They are a crucial component of modern electrical safety standards, especially in areas prone to moisture.