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← TechnologyWhich outcome occurs when undersized circuit breakers protect industrial induction motor circuits during startup?
A)Nuisance tripping due to inrush current✓
B)Motor overheating due to harmonics
C)Arc flash hazard during normal operation
D)Increased energy consumption from reactive power
💡 Explanation
When undersized breakers protect induction motors, nuisance tripping results from exceeding the breaker's instantaneous trip setting because induction motors draw a high inrush current during startup. Therefore nuisance tripping occurs, rather than overheating, arc flash, or increased consumption which require sustained overloads or insulation failures.
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