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← TechnologyWhich outcome occurs when a ground fault circuit interrupter (GFCI) detects milliamps leakage to ground?
A)Immediate circuit breaker disconnection✓
B)Gradual increase in supply voltage
C)Reduction of current carrying capacity
D)Audible alarm followed by a time delay
💡 Explanation
When a GFCI senses a small current leaking to ground it trips, opening the circuit because the differential transformer detects an imbalance between outgoing and return currents. Therefore immediate disconnection occurs, rather than voltage increase, capacity reduction, or delayed alarm, which require alternative conditions/circuit designs.
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