20' of clearance is required for power lines up to 350 kV or 50' of clearance for power lines that exceed 350 kV. If any part of the equipment, load line, or load could get in the prohibited zone while operating up to the crane's maximum radius, then the employer can choose the following:
• Line verified de-energized & visibly grounded by utility owner.
• Clearance: maintain clearance from a prohibited zone: with additional encroachment prevention measures as defined in 1926.1407,.1408, and .1409.
• Determine lines voltage and minimum approach distance permitted under Table A* with additional encroachment prevention measures as defined in 1926.1407,.1408 and .1409
TABLE A - Minimum Clearance Distances While in Operation
Crane Power Line Clearance Requirements Sticker size is 10 inches by 5 1/2 inches.
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