For equipment rated at 1200A or more, what is the required entrance and egress dimension for working space?

For equipment rated at 1200A or more, the National Electrical Code (NEC) specifies requirements for working space that ensure safe access and adequate room for maintenance and operation. According to the NEC, the minimum entrance and egress dimensions for this type of equipment must be 24 inches wide and 78 inches high. This measurement allows personnel to safely access the equipment while adhering to safety standards, promoting proper ventilation, and ensuring that tools and personnel can operate without hindrance.

The width of 24 inches provides sufficient space for individuals, including those who may be using safety gear or carrying equipment. The height requirement of 78 inches accommodates most individuals standing upright, which is important for tasks that require both hands and clear sightlines.

To summarize, this specific dimension is crucial for ensuring that the area around the equipment is compliant with safety regulations, while providing enough room for effective operation and maintenance work.