What is the purpose of a messenger in cabling?

The purpose of a messenger in cabling is primarily to support the weight of the cable. Messengers are typically used in outdoor or aerial installations, where they act as a tension member. They provide structural integrity by holding the cables securely in place and allowing them to be suspended without sagging. This is essential in maintaining correct elevation and separation from the ground or other structures, which can help prevent damage to the cables from environmental factors, physical stress, or potential interference caused by contact with other objects.

In aerial applications, the messenger wire is often a strong metal wire that can bear the weight of the cables attached to it, thus ensuring that the cables are properly suspended and protected from potential hazards. The use of a messenger allows for tidy and efficient installations, which is critical for the longevity and reliability of the cabling system.