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HS&E RAAC practice question: Electrical isolation (2 of 5)

E. Specialist: HVACR – refrigeration and air conditioning A free question from our original HS&E RAAC practice exam. Try it, then open the answer to see why each option is right or wrong.

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A client asks you to fault-find on a live control panel because it is quicker.

What does HSE say?

Choose one answer.

  1. A. Live work is fine if you are quick
  2. B. Live work is fine on small units
  3. C. Live work is fine with rubber boots
  4. D. Avoid working live
Show the answer and explanation

Answer: D

  • A. Wrong: Wrong. Avoid live work.
  • B. Wrong: Wrong. Avoid live work.
  • C. Wrong: Wrong. Avoid live work.
  • D. Right: Right. HSE says electrical contractors should not work live if it can be avoided.

Explanation

Avoid live working. Make equipment dead before working on it.

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