What is the minimum safe distance to a powerline during transit energized with 500V?

• A. 6 feet
• B. 4 feet
• C. 8 feet
• D. 10 feet

Answer: (B)

Keep a safe clearance from energized lines to prevent an electric arc or accidental contact as equipment moves. For a line energized at about 500 volts, the practical minimum distance that provides a workable safety buffer during transit is about four feet. This distance balances the risk of arcing with the need to operate without excessive restrictions, while still accounting for normal line sag, wind, and equipment movement.

If conditions change—such as wet weather, ice on the line, or greater equipment sway—the required clearance can increase, and operations should be adjusted accordingly. Larger clearances are safer but not usually the minimum required for this voltage level.