According to the National Electric Code, what is the minimum height required for a working space in front of a 480Y/277V 1200A switchboard measured from the floor?

The minimum height required for a working space in front of a 480Y/277V 1200A switchboard, as specified by the National Electric Code (NEC), is established to ensure safety and accessibility for maintenance and operation. According to NEC, the vertical working space must allow adequate room for technicians to operate and maintain equipment without risk of injury or obstruction.

The NEC specifies that the minimum height of a working space in front of electrical equipment like switchboards should be a minimum of 6.5 feet from the floor. This measurement accounts for the average height of equipment and maintains a safe working environment, preventing accidental contact with live components while providing sufficient headroom for workers’ movements.

In contrast, heights lower than 6.5 feet may not provide sufficient room for safe access to the equipment. This regulation helps ensure compliance with safety standards, reduces the possibility of accidents, and enhances the overall effectiveness of maintenance work.