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HS&E Operatives practice question: Electrical safety on site (5 of 7)

C. Safety A free question from our original HS&E Operatives practice exam. Try it, then open the answer to see why each option is right or wrong.

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During a refurbishment, an old lighting circuit needs to be disconnected before the ceiling is taken down.

Who should do this?

Choose one answer.

  1. A. Any worker, once the light switch is turned off
  2. B. The first person to arrive on site
  3. C. Anyone wearing rubber gloves
  4. D. A trained, competent electrician
Show the answer and explanation

Answer: D

  • A. Wrong: Wrong. A switch does not isolate a circuit. Parts can still be live.
  • B. Wrong: Wrong. Only trained, competent people should work on electrical systems.
  • C. Wrong: Wrong. Rubber gloves are not a safe system of work. The circuit must be isolated by a competent person.
  • D. Right: Right. HSE says electrical work should only be done by people who are trained and competent, and safe isolation procedures must be followed at all times.

Explanation

Only trained, competent people should work on electrical systems, and they must use safe isolation. Never assume a circuit is dead.

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