CSLB C-27 Landscaping ContractorSafetyHard
A landscaping crew is working near an overhead power line while planting a tall tree. The power line is approximately 15 feet above ground level. According to Cal/OSHA, what is the minimum safe working clearance distance for equipment and materials from this energized overhead power line?
- A12 feet
- B8 feet
- C6 feet
- D10 feet
Show answer & explanationAnswer & explanation
Correct answer: D. 10 feet
Cal/OSHA Title 8, Section 2946 (a)(2) generally requires a minimum clearance of 10 feet for equipment and materials from energized overhead high-voltage lines (up to 50 kV). For lines over 50 kV, the clearance increases. Given the scenario, 10 feet is the standard minimum for typical distribution lines.
Why the other options are wrong
- A. 12 feet is a safer distance but not the minimum required by Cal/OSHA for typical distribution lines, implying a lack of specific regulatory knowledge.
- B. 8 feet is also insufficient and does not meet the Cal/OSHA minimum.
- C. 6 feet is insufficient and unsafe for overhead power lines.
Overhead Power Line Clearance
The minimum safe distance that equipment, materials, and personnel must maintain from energized overhead electrical lines.
- Critical for preventing electrocution.
- Specific distances mandated by Cal/OSHA.
- Distance varies with voltage level.
Memory trick: Ten feet clear, no power line fear!