Calculating cable pulling tension is a fundamental step to avoid exceeding the cable's maximum tension rating, which can cause permanent damage. The calculation is complex but is generally based on a few key factors:

• Cable Weight: The weight of the cable per unit of length.

• Coefficient of Friction: This value represents the friction between the cable jacket and the conduit or rollers. Using a proper cable pulling lubricant can significantly reduce this value.

• Number and Angle of Bends: Each bend in the route multiplies the tension from the previous section. This is why careful route planning is crucial.

• Sidewall Pressure: The force exerted by the cable on the inner wall of a bend. This pressure must not exceed the cable's rated limit.

By performing these calculations beforehand, you can determine the required winch power, the best pulling direction, and the need for intermediate assist points.