Red Seal Electrician Practice
Safety and work practicesQuestion 260 of 1506

What is the minimum height of the letters on a "Danger — High Voltage" sign at an approach to live high voltage equipment?

  1. 13 mm
  2. 50 mm
  3. 25 mm
  4. 100 mm
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Correct answer: 50 mm

The sign must be conspicuous, on a contrasting background, with letters at least 50 mm high.

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