Because there are many kinds and specifications of wires and cables, and their performances are different, we should fully understand the design requirements when selecting them, and fully consider the requirements of environment, installation, maintenance and reliability. Different products and different products have different conditions of use, and the selection of wires is different, among which environmental temperature, cross-sectional area of wires and core structure are important factors.

General wires and cables can be selected from the following aspects:

1, need to bear mechanical tension, pressure, large-span creep resistance, can choose reinforced cable, such as armored cable with copper wire or steel belt.

2.When moisture and water resistance are needed, cables with radial waterproof layer and longitudinal water resistance function can be selected, such as cables with aluminum-plastic integrated sheath or metal sheath.

3.When the ambient temperature is high, high-temperature wires should be selected, such as ZR series and NH series wires and cables; If strong anti-interference ability is needed, high-temperature resistant mineral insulated fireproof cables with shielding can be selected, such as BTTZ, BTLY, NG-A, YTTW, BBTRZ and other series of fireproof cables.

4, the use of special environment, need to prevent ants, rodents, electrochemical corrosion resistance and other requirements, can choose anti-ant and anti-mouse special cable.

5.When the electrical signal and optical fiber signal are transmitted at the same time, the photoelectric composite cable can be directly selected.

6.When salt fog resistance, light aging, flexibility and softness are required, cables with rubber sheath can be selected.

The above are just a few simple suggestions. How to choose a suitable cable depends not only on the reputation of the cable factory, but also on whether these cable characteristics are suitable for the project tasks, not necessarily expensive, and also on factors such as funds.