What do the letters "GFCI" stand for?

The letters "GFCI" stand for Ground Fault Circuit Interrupter. This device is crucial for enhancing electrical safety, particularly in areas where electrical equipment may come into contact with moisture. A GFCI functions by monitoring the electrical current flowing through a circuit; if it detects an imbalance between the outgoing and incoming current, which may indicate a ground fault, it quickly interrupts the circuit, preventing potential electric shock.

GFCIs are commonly used in locations such as bathrooms, kitchens, and outdoor areas where the risk of electric shock is heightened due to the likelihood of water exposure. Understanding this terminology is essential for anyone working with electrical systems, as it underscores the importance of safety measures in electrical installations.