OSHA requires clearance of ______ when voltage is up to 50 kV.

• A. 5 ft
• B. 10 ft
• C. 15 ft
• D. 20 ft

Answer: (B)

The main idea here is understanding safe minimum clearance from overhead power lines when operating near them. OSHA sets specific distances based on the line’s voltage to prevent contact or electric arcing as equipment moves.

For voltages up to 50 kV, the required minimum clearance is 10 feet. This buffer helps account for the crane’s reach and movement, as well as potential shifts due to wind or operator adjustments, so the boom, load, or any part of the crane won’t come close enough to energize the line or cause an arc.

If the voltage were higher, larger clearances would be required, which is why options like 15 ft or 20 ft exist for higher voltage ranges. But for the scenario given, 10 feet is the correct safety distance.