Safety and work practicesQuestion 266 of 1506

Which words must a lock-out tag show, or have a symbol that means the same?

  1. MAINTENANCE IN PROGRESS
  2. DO NOT OPERATE
  3. POWER OFF
  4. CAUTION — EQUIPMENT DOWN
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Correct answer: DO NOT OPERATE

The tag must carry the words "Do Not Operate" in both official languages, or a symbol with that meaning.

Source: Canada Occupational Health and Safety Regulations (SOR/86-304), Canada Occupational Health and Safety Regulations (SOR/86-304), Part VIII: Electrical Safety

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Questions last reviewed: 18 October 2026