Professional Answer: Proper pre-pull planning is essential to prevent equipment failure, project delays, and most importantly, damage to expensive cables. The most necessary calculation is determining the maximum pulling tension. Factors considered include:

• Cable Weight: The total weight of the cable being pulled.

• Coefficient of Friction: The friction created between the cable and the inner surface of the conduit or OHTLstringingequipment.com/Stringing-Blocks--Sheaves.html target='_blank'>Stringing Blocks.

• Number of Bends: Each bend significantly increases friction and tension. Our engineers at Ningbo Changshi use these calculations to recommend the precise equipment and accessories—such as specialized lubricants and Cable Feeders—that will ensure the pull remains safe and efficient.