Example: A 288-fiber ADSS cable on 50m poles requires 7/2. 2mm galvanized steel messenger wire (tensile strength ≥41,000N). Anchoring: Use concrete dead-end poles . Deploying fiber above ground on poles or towers removes the need for underground digging and is particularly useful when the ground is uneven, rocky or both. Aerial installation is generally much less costly than underground construction also. Understanding Overhead Fiber Optic Cable Overhead fiber optic. These cable stability structures are necessary throughout various industries, specifically for utility services. This approach maximizes existing infrastructure and offers flexibility for future modifications as your capacity needs evolve.