What is the purpose of messenger wire in aerial installations?

The purpose of messenger wire in aerial installations is primarily to provide added structural support. Messenger wire acts as a thick, strong line that runs parallel to the fiber or coaxial cables being installed overhead. It serves as a support mechanism to keep the cables suspended and properly positioned along the utility poles or towers, which helps maintain their integrity over long distances and in varying weather conditions.

By ensuring that the cables are adequately supported, messenger wire also helps prevent sagging, which can lead to damage or signal degradation over time. This structural support is especially important in scenarios where cables are exposed to wind, ice, or other environmental factors that might compromise their position.