What does GFCI stand for and what is its primary safety function backstage?

• A. General Fire Control Interface; monitors smoke and triggers alarms.
• B. Ground Fault Circuit Interrupter; detects ground faults and interrupts power to prevent electric shock.
• C. Grounded Fuse and Circuit Initiator; controls circuit load during power outages.
• D. Guaranteed Frequency Current Inverter; stabilizes power supply.

Answer: (B)

Ground Fault Circuit Interrupter stands for a device that protects people from electric shock by quickly cutting power when current leaks to ground. It works by watching the amount of current flowing in the hot and return (neutral) conductors; if some of that current escapes through a person or to ground, the imbalance triggers the outlet or breaker to trip within milliseconds, shutting off power. This is especially important backstage where moisture, puddles, or damp floors can create shock hazards. GFCIs are required on many outlets and portable power setups in wet or damp areas, so a performer or crew member who accidentally touches a live conductor won’t receive a dangerous shock. After tripping, the fault must be found and the device reset to restore power. They protect people, not equipment or fires; a regular circuit breaker handles overcurrent conditions.