What is the maximum number of cable pairs recommended to effectively use slack span design?

The maximum number of cable pairs recommended for effective slack span design is based on the physical and mechanical properties of the cables, as well as the standards and best practices established for outside plant design. A limit of 300 pairs is suggested because beyond this number, issues such as increased weight, more complex handling, and significant challenges in maintaining proper tension and slack become more pronounced.

When slack spans are used, it's crucial to allow enough flexibility for the cables while maintaining their performance and longevity. If the number of cable pairs exceeds the recommended threshold, it may lead to stress on the cables during installation, changes in environmental conditions, and the potential for damage over time. Hence, adhering to the 300 pairs guideline helps ensure reliable operation, easier maintenance, and the ability to accommodate future changes or splices without compromising system integrity.