In order to safely carry out repairs to a...

Question 1 / 270705eccefa3bacbc34ba4d47e5b

Question 1 of 270705eccefa3bacbc34ba4d47e5b

In order to safely carry out repairs to a generator circuit breaker, it must be isolated from the bus. How is this accomplished?

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Question 1 of 27070

In order to safely carry out repairs to a generator circuit breaker, it must be isolated from the bus. How is this accomplished?

🔍 Key Concepts

• Electrical isolation vs. control/protection functions • How a bus and generator circuit breaker are physically connected on a shipboard switchboard • Difference between a protective relay (reverse power/reverse current) and a mechanical disconnect/link/fuse

💭 Think About

• Which device in the options actually creates a visible, physical break in the power path between the generator breaker and the bus? • Which devices are meant mainly for protection and automatic tripping, not for safely working on the breaker itself? • On a marine switchboard, what is the normal, safe procedure before working on bus or breaker gear: do you rely on a relay, or do you open and/or remove solid conductors like links or fuses?

✅ Before You Answer

• Verify which option represents a primary current‑carrying path rather than a sensing/control device. • Check which device would remain safe if someone accidentally re-energized the generator while you were working. • Confirm which choice gives you a clear isolation point you could lock and tag out before maintenance.

Question 1 of 27070

In order to safely carry out repairs to a generator circuit breaker, it must be isolated from the bus. How is this accomplished?

opening the reverse power relay

opening the bus disconnect links

opening the generator bus fuse connections

opening the reverse current relay

Question 1 / 270705eccefa3bacbc34ba4d47e5b

Question 1 of 270705eccefa3bacbc34ba4d47e5b

In order to safely carry out repairs to a generator circuit breaker, it must be isolated from the bus. How is this accomplished?

Back

Question 1 of 27070

In order to safely carry out repairs to a generator circuit breaker, it must be isolated from the bus. How is this accomplished?