It is NOT permitted for a personnel access opening to an enclosure to be located directly above electrical equipment or conductors. Which option best reflects this restriction?

• A. It is permitted to be above equipment
• B. It must not be located directly above equipment or conductors
• C. It must be located directly above equipment
• D. Location is unrestricted

Answer: (B)

Safety for personnel working with enclosures hinges on keeping access openings away from live parts. If an opening is located directly above electrical equipment or conductors, a maintenance person opening the door or cover could have hands, arms, or tools entering the zone of energized parts. Arc flash, electric shock, or conductive debris could also travel downward toward the operator when the enclosure is opened, increasing the risk of injury. By ensuring the opening is not directly above the equipment or conductors, you reduce the chance of accidental contact and the severity of any possible incident. The idea is to position openings so maintenance can be performed without exposing workers to the live parts below.