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← TechnologyWhich risk increases significantly when over-sensitizing ground fault circuit breakers (GFCI)?
A)Nuisance tripping during normal operation✓
B)Increased let-through current during faults
C)Elevated breaker internal temperatures
D)Decreased breaker short circuit capacity
💡 Explanation
Nuisance tripping rises when GFCIs are too sensitive because variations in background leakage currents trigger the *differential current sensing* mechanism earlier than necessary; therefore, breakers trip without a true fault, rather than operating only during legitimate fault conditions.
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