NEC Commercial Electrical Practice Test

What is the dedicated electrical space required above a motor control center?

1. 5 ft

2. 6 ft

3. 7 ft

4. 8 ft

The correct answer is: 6 ft

The dedicated electrical space required above a motor control center is specified to be 6 feet. This requirement is established by the National Electrical Code (NEC) to ensure adequate access and maintenance capabilities, as well as safety for personnel working around high-voltage equipment. Providing 6 feet of clear space above a motor control center facilitates the installation and servicing of electrical equipment. It allows technicians sufficient room to work without risk of contact with energized parts or equipment. This height also assists in the proper operation of ventilation systems and ensures that any maintenance activities can be performed safely and effectively without obstruction. The NEC sets these requirements to mitigate risks and enhance safety protocols in commercial electrical installations, particularly in environments where multiple electrical controls are housed in a centralized location like a motor control center.