Answer from Ningbo Changshi: The standard for maximum pulling tension is typically provided by the cable manufacturer, often in pounds per circular mil (lbs/CM) for conductors or a total load limit for the entire cable assembly. This limit is the absolute maximum the cable can safely withstand.

The pulling method is crucial because it dictates how this tension is applied:

• Pulling with a Cable Grip (Sock): When using a mesh grip over the cable jacket, the tension is applied to the outer layer. The maximum tension for this method is typically a fixed value (e.g., 1,000 lbs) as it is limited by the grip's holding capacity and the integrity of the cable's jacket.

• Pulling with a Swage-On Pulling Eye: This method involves a dedicated pulling eye that is compression-fitted onto the conductors themselves. This allows the pulling force to be applied directly to the high-strength conductors, enabling a much higher pulling tension that is directly related to the conductor's cross-sectional area. This is the preferred method for very long, heavy-duty pulls.

At Ningbo Changshi, we provide a full range of pulling grips and pulling eyes to match your specific pulling method and ensure you can apply the necessary tension while staying within the manufacturer’s safe working limits.