What is the minimum clearance height required for overhead feeder conductors over commercial areas with truck traffic?

The minimum clearance height required for overhead feeder conductors over commercial areas where truck traffic is prevalent is indeed 18 feet. This requirement is established to ensure that there is adequate space above the ground to prevent any potential contact between vehicles, particularly large trucks, and the overhead electrical conductors. The 18-foot clearance helps to avoid scenarios that could lead to electrical hazards or power outages, ensuring both safety and reliability in areas designated for commercial traffic.

The significance of this height lies in accommodating not only standard vehicles but also larger trucks that may require more vertical clearance. By adhering to this regulation, safety standards set by the National Electrical Code (NEC) or local code amendments can be upheld, protecting workers, pedestrians, and drivers in commercial environments.