Question 78Electricity & Electronics - Assistant Engineer

The correct answer is A) Secure and tag the supply circuit breaker in the open position. This is the correct answer because it is a crucial safety precaution to take before working on any electrical or electronic equipment. By securing and tagging the supply circuit breaker in the open position, you ensure that the equipment is completely de-energized and cannot be accidentally re-energized during the work, preventing the risk of electric shock or other hazards. The other options are not as effective or appropriate. B) De-energizing the applicable switchboard bus may not completely isolate the equipment being worked on. C) Bypassing the interlocks is unsafe and should never be done. D) Stationing a man at the circuit supply switch does not provide the same level of protection as physically securing and tagging the breaker.