Which two techniques are recommended for preventing excessive pulling tension through a conduit during underground installations?

The recommended techniques for preventing excessive pulling tension through a conduit during underground installations are the midpoint pull and the intermediate pull.

The midpoint pull technique involves creating a situation where the cable is pulled from the middle of the run rather than from one end. This approach helps to distribute the tension more evenly across the length of the cable, reducing the likelihood of damage due to excessive force. It minimizes strain on both the cable and the conduit, making it especially useful for longer installations where tension could build up excessively at either end.

The intermediate pull, on the other hand, refers to pulling the cable in segments with the use of intermediate pulling points. This technique breaks the overall pulling distance into smaller sections, allowing for better control of the pulling tension and reducing stress on the cable. By introducing pauses or intermediate supports, the risk of creating excessive tension is mitigated, which also contributes to preserving the integrity of the cable during installation.

Together, these two methods ensure a careful approach to cable installation, maintaining performance standards and minimizing the risk of damage to the conduits and cables involved.