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Precautions for pre-branch cable
To view:3  The release date:2019-12-19

The connection mode of vertical main cable and branch line generally includes winding connection method and sleeve connection method. In the use of winding connection method, the vertical main cable and branch line are connected through peeling, winding connection, tin rinsing, wrapping, fixing and other procedures. Due to the large length and width of the connection between the vertical main cable and branch line, it is difficult for the winding joint to process tin rinsing.

The connection between the above two vertical main cables and branch lines is not tight at the joint.

The main cable of prefabricated branch power cable is made of multi-core or single-core copper conductor complete plastic (VV or YJV) power cable, while the branch cable is made of single-core copper conductor complete plastic (VV or YJV) power cable.

When the pre-branch cable leaves the factory, it is wound on the cable tray or tied in a loop. The branch cable is tightly tied on the main cable. After the main cable is fixed, the branch cable is wound and unwound. When the main cable of the prefabricated branch power cable adopts the single-core cable, consideration should be given to the prevention of eddy current effect. When the cable is laid vertically and horizontally, the floor and wall shall be covered with fire retardant coating according to the requirements of the fire code.

The main advantages of prefabricated branch power cables

Because of the above advantages, prefabricated branch power cable will be more and more used in power and lighting distribution lines such as high-rise buildings, multi-story buildings, residential buildings, factories, workshop production lines, Bridges, roads and tunnels.


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