Electrician Red Seal · Question
A utility crew is performing maintenance on overhead power lines. Which of the following safety procedures is paramount before work can begin on de-energized lines?
Before working on de-energized high-voltage lines, it is crucial to confirm visible open points (disconnects) and apply personal protective grounds to bond the
Start free practice for Electrician Red Seal
150 questions · no signup required · 40 free questions per day
Question: A utility crew is performing maintenance on overhead power lines. Which of the following safety procedures is paramount before work can begin on de-energized lines?
Answer options:
- Ensuring all switches are closed to maintain system integrity. ✅ Confirming visible open points and applying personal protective grounds.
- Directly touching the conductor to verify de-energization.
- Relying solely on lockout tagout procedures without further verification.
Correct answer: Confirming visible open points and applying personal protective grounds.
Explanation: Before working on de-energized high-voltage lines, it is crucial to confirm visible open points (disconnects) and apply personal protective grounds to bond the conductors to a known ground. This ensures no accidental re-energization or induced voltage poses a hazard. Relying solely on lockout/tagout without physical verification and grounding is insufficient for high voltage systems.
Start free practice for Electrician Red Seal
150 questions · no signup required · 40 free questions per day
More about Electrician Red Seal
Related Questions
- A residential garage is to be wired with a 15 A, 120 V duplex receptacle. According to the Canadian Electrical
- During a renovation of a commercial kitchen, an electrician needs to replace an old single-phase, 240 V, 5 kW
- A commercial kitchen is being renovated, and several new 4 kW, 208 V, single-phase electric ovens are being in
- What is the minimum working space depth required in front of an electrical panel rated 200 A, 120/240 V, locat
- A Red Seal electrician is setting up temporary power for a construction site. The main temporary service is a
- A new industrial facility requires a 600 V, three-phase, 150 A feeder to supply a motor control centre. The co
More for Electrician Red Seal candidates
Practice tests
Question explanations
- A residential garage is to be wired with a 15 A, 120 V duplex receptacle. According to the Canadian Electrical
- During a renovation of a commercial kitchen, an electrician needs to replace an old single-phase, 240 V, 5 kW
- A commercial kitchen is being renovated, and several new 4 kW, 208 V, single-phase electric ovens are being in
- What is the minimum working space depth required in front of an electrical panel rated 200 A, 120/240 V, locat
Ready to practice?
Free, no signup required. Build a wrong-question list as you go.
Start Free Electrician Red Seal Practice →Related courses
Other Canadian certifications candidates often prepare for alongside this one.