Safety and work practicesQuestion 258 of 1506

Isolating a piece of equipment is not feasible, and an electrician must work on it live. What must the employer do?

  1. Reduce the supply voltage to below 750 V and then proceed
  2. Ask the employee to sign a waiver before the work starts
  3. Allow the work only during off-peak hours at night
  4. Instruct the employee in live-conductor safe procedures
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Correct answer: Instruct the employee in live-conductor safe procedures

The regulation requires the employer to give live-work instruction when isolation cannot be done.

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

Practice safety and work practices

Questions last reviewed: 18 October 2026