A 480 VAC motor is supplied power via an electrical disconnect in series with a breaker.
Which one of the following describes the proper operations to isolate power to the motor?
A. Open the disconnect first, then the breaker.
B. Open the breaker first, then the disconnect.
C. Open the device that is closest to the motor first.
D. Open the device that is closest to the power source first.
Show Answer
Answer: B
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