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← TechnologyWhich outcome occurs when improperly sized breakers are installed in a critical uninterrupted power supply's (UPS) distribution panel?
A)Cascading breaker failure occurs downstream.✓
B)Reduced harmonic distortion is experienced.
C)Increased power factor is maintained.
D)Transformer operates consistently cooler.
💡 Explanation
Cascading breaker failure results because overcurrent is not promptly interrupted; the *inrush current withstand* mechanism fails and blows the undersized breaker, shifting the load to the next breaker downstream, therefore causing subsequent failures along the circuit, rather than isolating the fault.
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