NEC Commercial Electrical Practice Test

What is the minimum headroom required in front of a motor control center?

1. 5 feet

2. 6 feet

3. 6.5 feet

4. 7 feet

The correct answer is: 6.5 feet

The minimum headroom required in front of a motor control center is 6.5 feet. This requirement is established in the National Electrical Code (NEC) to ensure safe access and maintenance of the equipment. The 6.5 feet minimum allows technicians and personnel to work comfortably without the risk of striking their heads on the equipment or any structures above it. This specification is particularly important in industrial and commercial settings where motor control centers can be large and may include various components that need attention or servicing. Adequate headroom contributes to safety and avoids potential hazards that could arise from insufficient clearance. Options that suggest a lower minimum height than 6.5 feet do not meet this safety criterion and could lead to unsafe working conditions. Therefore, adherence to this requirement is crucial for the safety of personnel working in proximity to motor control centers.