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Which outcome occurs when excessively sensitive ground fault protection settings are configured in an industrial motor control center?

A)Nuisance tripping of circuit breakers
B)Harmonic resonance in power grid
C)Motor bearing currents increase rapidly
D)Transformer core saturation accelerates quickly

💡 Explanation

When excessively sensitive, ground fault protection misinterprets normal leakage as a fault, causing nuisance tripping of circuit breakers; this is due to incorrect differential current monitoring because the threshold is too low; therefore, breakers trip unnecessarily rather than only during actual faults.

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