Fiber Optics – Light Brigade Practice Test

Lashing/overlash is the standard way to install aerial telecom and CATV cables because it lets the cable be securely supported along utility poles without trenching. A messenger wire is run between poles, and the distribution cable is attached to that messenger with lashings or other fasteners. This method provides fast, economical installation over long spans, allows for proper slack and tension control, and makes future upgrades or repairs easier while keeping the cable off the ground and protected from weather on the pole line.

Direct burial places the cable underground, which isn’t applicable to aerial runs. Duct insertion and conduit routing involve putting cables inside ducts or conduits, usually underground or inside buildings, not exposed aerially on poles.