Both "Conductor pulling grips" and "Running Boards" are essential tools for attaching a pulling rope to a conductor during stringing operations, but they are designed for different applications:

• Conductor pulling grips (also known as Wire Grips or Cable Socks):

  • Design: These typically consist of a woven steel mesh tube that tightens around a single conductor when tension is applied. They have an eye or thimble at one end for attachment to the pulling rope or Swivel.

  • Application: Primarily used for stringing single conductors (e.g., a single ACSR, AAAC, or even a single OPGW). They provide a secure, self-tightening grip as pulling force increases.

  • Advantages: Simple, lightweight, cost-effective for single-conductor pulls.

  • Limitation: Not suitable for pulling multiple conductors simultaneously as part of a bundle, as they cannot ensure even tension distribution across separate conductors.

• Running Boards (also known as Conductor Running Boards or Bundled Conductor Running Boards):

  • Design: These are specialized, more complex tools designed with multiple attachment points, often with individual, articulated clamps or secure pockets for each conductor in a bundle. They are rigid structures that maintain the exact spacing of the bundle while being pulled.

  • Application: Exclusively used for stringing bundled conductors (e.g., two, three, or four conductors simultaneously as a single unit). The running board ensures that each conductor in the bundle experiences the same pulling force and maintains its relative position, preventing twisting or spiraling. They are essential for efficient and safe bundle installation.

  • Advantages: Ensures even tension distribution across all conductors in a bundle, maintains bundle integrity, and significantly speeds up the installation of bundled lines. Crucial for large transmission projects.

  • Limitation: Heavier and more complex than single pulling grips; specifically designed for bundled applications.

In summary, if you are pulling a single conductor, a conductor pulling Grip is the appropriate tool. If you are installing multiple conductors as a pre-designed bundle, a Running Board is the essential tool to maintain the bundle's configuration and ensure a smooth, synchronized pull.