The maximum allowable tension for a cable is a fundamental value provided by the cable manufacturer. It is primarily based on the cross-sectional area of the conductor material and its yield strength. The standard formula for this calculation is:

• Tmax is the maximum allowable pulling tension.

• K is the constant for the conductor material (50 N/mm² for copper; 30 N/mm² for aluminum).

• S is the total cross-sectional area of all conductors in mm2.

While this formula provides the absolute maximum, it is a static value. For real-world applications, it is essential to use a pulling tension calculator that factors in the length, number of bends, and coefficient of friction to predict the total force required at every point along the pull. This is why our hydraulic winches with built-in electronic tensiometers are the superior solution, as they measure and control the tension in real-time, eliminating the guesswork of a static chart.