Red Seal Electrician Practice
Safety and work practicesQuestion 180 of 1506

A job on isolated equipment is finished. When does the guarantee of isolation end?

  1. When the first lock is removed from the device
  2. When the shift ends and the next crew arrives
  3. As soon as the operator re-energizes the equipment
  4. Once the report is made and both people sign records
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Correct answer: Once the report is made and both people sign records

The person in charge tells the guarantor the work is done and signs a record. The guarantor then signs a record too. Only then does the guarantee end.

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