How far above public streets must overhead conductors maintain clearance when subjected to truck traffic?

When considering the minimum clearance for overhead conductors above public streets that are subject to truck traffic, the National Electrical Code (NEC) specifies that conductors must maintain a height of 5.5 meters (18 feet). This height is essential to ensure safety and prevent electrical hazards, as it helps avoid contact with vehicles, particularly larger trucks which can easily collide with lower hanging wires.

This clearance is designed to protect both the electrical infrastructure and the vehicles using the roadway. Ensuring that overhead conductors meet this requirement minimizes the risk of electrical outages and enhances safety, as it reduces the likelihood of electrical shock or fires that could result from contact with overhead lines.

It's important to note that other clearances above different surfaces may vary according to the NEC standards. However, in the context of truck traffic on public roads, 5.5 meters is the established clearance to accommodate larger vehicles and keep the area safe for both drivers and electrical systems.