For large equipment with overcurrent devices, what is the required minimum width and height for entrance to the working space?

The minimum width and height for entrance to the working space around large equipment with overcurrent devices is specified to ensure that adequate space for safe operation and maintenance is available. The 24 inches wide and 6.5 feet high requirement allows for easy access, enabling personnel to safely navigate the area while accommodating the larger equipment and necessary safety gear.

These dimensions support the need for personnel to perform their duties without the risk of injury, ensure that tools and equipment can be moved into and around the working space, and that there is sufficient headroom for standing and working comfortably. This is critical, as the working environment often requires maneuvering around cumbersome equipment and handling tools, which can pose significant safety risks without adequate space.

In contrast, the other options provide either insufficient width or height, which would not meet safety standards or provide a functional working environment in compliance with the NEC regulations. For instance, narrower entrances may restrict movement and pose hazards, while insufficient height could lead to situations where individuals could hit their heads or find it challenging to work efficiently. Thus, the specified 24 inches by 6.5 feet is the minimum necessary to ensure that the working space is safe, functional, and compliant with NEC guidelines.