What are the three rules for selecting wires and cables

The application of wire and cable in life is essential. What people pay more attention to is the quality of wires and cables, but the types of cables are also various. The more kinds, the more difficult it is to choose. Many people don’t know how to choose the right wires and cables to use, which leads to problems. To teach you how to choose the right wires and cables
Nowadays, more and more ACSR Cable lines are used in distribution lines, but it is very important to choose the cable type. Combined with the actual work, the paper simply discusses the application scope and selection of 10kV cable lines. First, it is necessary to determine where the cable is applied, where the cable passes, the load nature, capacity, etc. to select the cable.

1、 Application scope of wire and cable line: the place where the power equipment is clustered, prosperous area, important section, major roads, urban planning and urban environment with special requirements. In the area of serious pollution and corrosion which is difficult to solve, the reliability of power supply is high or the users with important load are required, key scenic spots, high load density urban center areas, new residential areas and high-rise buildings with large building area are built.
2、 Selection of wires and cables: determine the section according to the long-term allowable current carrying capacity, select the cable section according to short circuit thermal stability, select the cable section according to the voltage drop of the connecting circuit, check the section according to the mechanical strength, and select the section of neutral wire (n), protective ground wire (PE), protective grounding neutral line (pen).

3、 Correction of the current carrying capacity of electric wires and cables: long-term allowable current carrying temperature correction of cables, soil correction of long-term allowable current carrying capacity of cables, long-term allowable current carrying capacity correction for directly buried and parallel laying power cables, and correction of carrying capacity of 10kV and below cables laying through pipes.ç

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