What is the maximum permissible pull distance between horizontal backbone pull points?

What is the maximum permissible pull distance between horizontal backbone pull points?

• A. 98
• B. 50
• C. 120
• D. 75

Answer: (A)

When planning a horizontal backbone, you limit the distance between pull points to keep pulling tension and the cable’s bend radius within safe, manufacturer-recommended limits. For typical limited-energy cabling installations, the maximum permissible pull distance between horizontal backbone pull points is 98 feet. Sticking to this cap helps prevent damaging the conductors during pulling and ensures the route remains workable for future pulls or changes. Distances like 120 feet would push past the safe limit and risk overstressing the cable, while shorter distances (50 or 75 feet) are acceptable but do not represent the maximum allowed.

When planning a horizontal backbone, you limit the distance between pull points to keep pulling tension and the cable’s bend radius within safe, manufacturer-recommended limits. For typical limited-energy cabling installations, the maximum permissible pull distance between horizontal backbone pull points is 98 feet. Sticking to this cap helps prevent damaging the conductors during pulling and ensures the route remains workable for future pulls or changes. Distances like 120 feet would push past the safe limit and risk overstressing the cable, while shorter distances (50 or 75 feet) are acceptable but do not represent the maximum allowed.