In underground installations, which methods help maintain proper pulling tension?

The correct choice emphasizes the midpoint pull and the intermediate pull as methods for maintaining proper pulling tension during underground installations.

In the context of fiber installations, maintaining appropriate pulling tension is crucial to prevent damage to the fiber cables and ensure efficient installation. The midpoint pull involves creating a strategic mid-point to help distribute the tension evenly across the entire length of the cable being pulled. This technique helps reduce stress on the cable, minimizing the risk of damage or breaking during installation.

Similarly, the intermediate pull is utilized to achieve a similar effect by allowing breaks in tension at various intervals. By using these methods in combination, technicians can ensure that the pulling force is consistently managed throughout the installation process, thus providing a secure and reliable setup for the fiber network.

Other methods mentioned, such as the straight pull or loop pull, may not effectively manage tension as they focus more on different aspects of the pulling process without addressing the necessary tension control required specifically for safe fiber optics installation.