Learn the essential steps for installing an OPGW cable joint box, including preparation, mounting, fiber splicing, and sealing techniques, to ensure reliable and secure fiber optic connections in overhead power lines. Fiber optic cables have Kevlar aramid yarn or a fiberglass rod as their strength member. On long runs, use proper lubricants and make sure they are compatible with the cable jacket. “Securing” fiber optic cable goes beyond just preventing it from moving; it encompasses protecting its. A fiber termination box is the standard instrument used in fiber optic networks to connect, secure, and protect optical fibers at the terminating point. During installation, all curvatures should be smooth.