When pulling an optical fiber cable, the pull line should be attached to which of the following?

When pulling an optical fiber cable, the pull line should be attached to which of the following?

• A. Aramid yarn or central fiberglass or metallic strength members
• B. Plastic zip tie
• C. Nylon rope
• D. Copper wire

Answer: (A)

Fiber optic cables are designed with internal strength members that bear pulling tension. The pull line should be attached to these components—the aramid yarns (such as Kevlar) or central strength members like fiberglass or metallic strands—so the load is carried by parts built to handle it. This keeps the tension off the delicate fiber strands themselves, reducing the risk of stretching, crushing, or breaking the glass or plastic fibers. Attaching the pull line to an external item like a plastic zip tie or nylon rope isn’t reliable for the required loads and can slip, wear away, or snag. Copper wire isn’t part of the cable’s designed strength system and can nick or damage the insulation or fibers.

Fiber optic cables are designed with internal strength members that bear pulling tension. The pull line should be attached to these components—the aramid yarns (such as Kevlar) or central strength members like fiberglass or metallic strands—so the load is carried by parts built to handle it. This keeps the tension off the delicate fiber strands themselves, reducing the risk of stretching, crushing, or breaking the glass or plastic fibers.

Attaching the pull line to an external item like a plastic zip tie or nylon rope isn’t reliable for the required loads and can slip, wear away, or snag. Copper wire isn’t part of the cable’s designed strength system and can nick or damage the insulation or fibers.