What is the difference between overhead and underground conductor installation?

2025-08-16

The method of conductor installation is fundamentally different for overhead and underground projects. These differences dictate the type of equipment used, the process, and the overall complexity.

  • Overhead Conductor Installation: This process, often called tension stringing, involves installing bare conductors on towers or poles high above the ground. The primary goal is to maintain a specific tension and clearance to prevent the conductor from sagging and touching the ground or other objects. It requires specialized equipment to apply and control both pulling and braking forces.

  • underground Conductor Installation: This process, often called cable pulling or laying, involves placing insulated power cables within a protective conduit buried in a trench. The main challenge is to apply a smooth, controlled pulling force to draw the cable through the conduit without exceeding the manufacturer's specified tension limits, which could damage the insulation.

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