Electrician Red Seal · Question
A temporary power pole is being set up for a construction site. The overhead service conductors are installed. What is the minimum vertical clearance required by the CEC for overhead service conductors from grade to open accessible areas, not subject to vehicular traffic, over premises limited to pedestrian use?
Table 11 of the Canadian Electrical Code (CEC) specifies a minimum vertical clearance of 3.5 m (11.5 ft) for overhead service conductors from grade to open acce
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Question: A temporary power pole is being set up for a construction site. The overhead service conductors are installed. What is the minimum vertical clearance required by the CEC for overhead service conductors from grade to open accessible areas, not subject to vehicular traffic, over premises limited to pedestrian use?
Answer options:
- 3.0 m (10 ft) ✅ 3.5 m (11.5 ft)
- 4.0 m (13 ft)
- 4.5 m (14.8 ft)
Correct answer: 3.5 m (11.5 ft)
Explanation: Table 11 of the Canadian Electrical Code (CEC) specifies a minimum vertical clearance of 3.5 m (11.5 ft) for overhead service conductors from grade to open accessible areas, over premises limited to pedestrian use. This clearance ensures the safety of individuals walking beneath the conductors. Other options represent clearances for different scenarios (e.g., vehicular traffic, higher voltage).
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