Crane Operator Certification Exam Prep · Question
A crane operator is setting up a mobile crane near overhead power lines. The voltage of the lines is unknown, but they appear to be high-tension transmission lines. According to CSA Z150, what is the minimum safe working distance that must be maintained from these power lines if the voltage cannot be determined?
CSA Z150 Section 5.6.1 states that if the voltage of overhead power lines is unknown, a minimum clearance distance of 7.6 metres (25 feet) must be maintained to
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Question: A crane operator is setting up a mobile crane near overhead power lines. The voltage of the lines is unknown, but they appear to be high-tension transmission lines. According to CSA Z150, what is the minimum safe working distance that must be maintained from these power lines if the voltage cannot be determined?
Answer options:
- 1.5 metres (5 feet)
- 3.0 metres (10 feet) ✅ 7.6 metres (25 feet)
- 10.0 metres (33 feet)
Correct answer: 7.6 metres (25 feet)
Explanation: CSA Z150 Section 5.6.1 states that if the voltage of overhead power lines is unknown, a minimum clearance distance of 7.6 metres (25 feet) must be maintained to ensure safe operation. The other distances are insufficient for unknown high-tension lines.
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Question explanations
- According to most Canadian provincial regulations, who is ultimately responsible for the safe operation of a c
- A crane's rated capacity decreases as the load radius:
- What is the minimum number of full wraps of wire rope that must remain on a hoist drum when the hook is in its
- Before setting up a mobile crane, what is the most important factor to assess regarding ground conditions?
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