Installing cables, for sure, is not an easy feat, more so for aerial cable installations. Apart from using the right aerial equipment and tools, of course, the installers have to have the right skills and knowledge to do the job. Also, great focus and patience are two important qualities needed as well as the skills to make necessary adjustments when faced in real conditions. When it comes to actual installation, there are two methods that are generally used to install cables.
The first one is to lash the cable to a steel messenger. It is the very first item installed in between the poles where the cables will be laid over. Then the most widely used aerial equipment, a cable reel trailer, is used to pull the cable along the steel messenger. Then a cable lasher and guide are utilized to secure the cable into the messenger. The next equipment to use after the lasher is the aerial bucket truck to make the required adjustments to the cable.
In each of the poles, the cable should form an expansion loop to enable the messenger to expand. The sizes of the loop have a depth and a length, with the latter coming in larger than twice the former. Moreover, the cable must also keep its bending radius at a minimum all the time to avoid costly damages.
The second or alternative installation method is through the use of self-supporting figure 8 aerial cables called direct installation. This approach is known to simplify the job of placing the cables into the aerial facility. It prevents the use of a lot of aerial equipment because the self-supporting figure 8 already has the messenger and cable into its jacket or cross section. This combination of cables and the messenger strand results in a rapid one-step installation, leading to a more durable and reliable process.
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