The most common way a cable is destroyed during installation is by simply pulling it too hard. The Problem: Yanking a snagged cable or applying excessive force stretches the jacket and can snap the internal glass fibers, leading to a complete signal failure (often invisible from the. Whether you are wiring a massive data center or a smart home, pulling fiber optic cables through conduit is where the majority of permanent cable damage occurs. As a premium brand dedicated to providing high-quality, finished optical network solutions, Gcabling has analyzed countless installation. The glass fiber within the cable is fragile and, although the cable has been designed to protect the fiber, it can be damaged more easily than a copper wire. But fibers can also be cracked from too much tension during cable. Most fiber damage does not come from normal operation after the system is live. The following article explores best practices when pulling fiber optic. Even small forms of damage—from a bent cable to a rodent bite—can disrupt signals, cause costly outages, and require expensive repairs. Many installers pull fiber by the outer jacket which is prone to.