A rough terrain crane operator is setting up near overhead power lines. The lines are 75 kV. What is the minimum approach distance (MAD) the crane, its load, or any part of the rigging must maintain from these power lines according to typical Canadian OHS regulations (e.g., Ontario's Electrical Safety Code)?

Question: A rough terrain crane operator is setting up near overhead power lines. The lines are 75 kV. What is the minimum approach distance (MAD) the crane, its load, or any part of the rigging must maintain from these power lines according to typical Canadian OHS regulations (e.g., Ontario's Electrical Safety Code)?

Answer options: ✅ 4.5 metres

• 3.0 metres
• 6.0 metres
• 9.0 metres

Correct answer: 4.5 metres

Explanation: For power lines energized between 50.1 kV and 250 kV (such as 75 kV), Canadian OHS regulations, like those established by the Electrical Safety Authority in Ontario, mandate a minimum approach distance (MAD) of 4.5 metres for equipment and loads to prevent arc flash or electrocution hazards.