Practice Quiz

Red Seal Construction Electrician

Category - Construction Electrician

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You are called to troubleshoot a control panel on a remote location. The panel is supplied by a 24V DC solar power system and you will be working alone. Which of the following is not required?
  1. The power to the panel must be isolated and locked out before work begins.
  2. Contact must be made with a designated off-site person at predetermined intervals.
  3. All required PPE must be worn.
  4. A pre-job hazard assessment must be completed.
Explanation
Answer: A. Explanation: CSA Z462 4.1.6.2.3 states that energized electrical conductors and circuit parts that operate at less than or equal to 30 V ac or 60 V dc shall not be required to be de-energized when the capacity of the source and any overcurrent protection between the energy source and the worker are considered and it is determined that there will be no increased exposure to electrical burns or to explosion due to electrical arcs.
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