The safe working clearance when working on an energized 240 volt circuit breaker panel with exposed conductors is how many feet?

The safe working clearance when working on an energized 240 volt circuit breaker panel with exposed conductors is how many feet?

• A. 4
• B. 3
• C. 2
• D. 6

Answer: (B)

The idea is to keep a safe working space around energized parts so you can move and work without accidentally touching live conductors or triggering an arc. For a 240-volt panel with exposed conductors, a three‑foot clearance provides enough room to reach tools and operate safely while staying out of the reach of the live parts and any potential arc flash area. Four feet would be more than necessary for this scenario and could hinder access, two feet is too close to the live parts, and six feet is larger than needed for normal tasks on a 240‑V panel. So three feet is the practical minimum safe working clearance in this case.

The idea is to keep a safe working space around energized parts so you can move and work without accidentally touching live conductors or triggering an arc. For a 240-volt panel with exposed conductors, a three‑foot clearance provides enough room to reach tools and operate safely while staying out of the reach of the live parts and any potential arc flash area. Four feet would be more than necessary for this scenario and could hinder access, two feet is too close to the live parts, and six feet is larger than needed for normal tasks on a 240‑V panel. So three feet is the practical minimum safe working clearance in this case.