Circuit breakers normally trip open eventually under either continual or extended ___________ –overcurrent, or instantly when a ___________ -overcurrent condition occurs in the protected circuit.
Circuit breakers can be considered as resettable ___________ -overcurrent protection devices.
Internal failure due to ___________ is rare, so resetting the breaker (turning it completely off and then back on) normally restores the power.
If the CB responded to clear a(n) ___________ fault overcurrent in the circuit, the high-magnitude overcurrent probably caused internal damage or at least caused an error in the calibration of the CB.
The CB should be treated as a fuse ― a one-time device ― and replaced.
A) fault; overload; fault; overload; overload
B) overload; overload; fault; overload; fault
C) overload; fault; overload; overload; fault
D) fault; overload; overload; overload; fault
Show Answer
Answer:C
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