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What to pay attention to when wiring optical cables in buildings-4

Oct. 01, 2019

What to pay attention to when wiring optical cables in buildings?

Cable laying

The optical cable is divided into 4 cores, 6 cores, 8 cores, 12 cores, etc. according to the number of cores; it is divided into overhead and direct burial according to the laying method; it is divided into multimode (within 2 km) and single mode (2 km according to the supported distance). To dozens of kilometers). The enterprise local area network usually walks into the trench, the heating pipe trench or the buried outdoor multimode fiber in the park, and considers the overhead single mode fiber in the long distance interval.

In fiber cabling, signal attenuation is also unavoidable. The reasons for this are both internal and external: the internal attenuation is related to the fiber material, and the external attenuation is related to the construction and installation. Therefore, it should be noted that:

1) The first thing that should be done is that the highly trained technicians should perform the termination and maintenance of the fiber and operate according to the fiber construction specifications.

2)) There must be a very complete design and construction drawings so that construction and future inspections are convenient and reliable. During construction, be careful not to subject the cable to heavy pressure or to be damaged by hard objects; in addition, the traction should not exceed the maximum laying tension.

3) When the fiber is to be turned, its turning radius should be greater than 20 times the diameter of the fiber itself. When the fiber passes through the wall or through the floor, it is necessary to add a plastic tube with a protective cover, and fill the tube with a flame-retardant filler. A certain amount of plastic pipes can also be laid in advance in the building.

4) When the fiber is applied to the backbone network, at least 6-core fiber optic cable is required for each floor wiring closet, and 12-core fiber optic cable is best used for advanced applications. This is considered from the three aspects of application, backup and expansion.

5) The most important thing for a longer distance fiber installation is to choose a suitable path. The shortest path here is not the best, but also pay attention to the right to use the land, the possibility of erecting or burying, etc.