There are many types of wires and cables; how should I choose? Here is a summary of the following methods to help you choose wires and cables with more matching.
Choose according to the purpose
- If you want to use it for the transmission and distribution of electric energy, it is recommended to choose a power cable.
- If it is for the transmission of telephone, TV, or other electrical signals, you can choose a special communication cable.
- If it is specially used in the energy and transportation sector, industrial mining, or for control and protection circuits with AC-rated voltage below 450/750 volts, it is recommended to choose a control cable.
Choose according to the laying conditions
- If your use scenario is an environment that is prone to mechanical damage or external erosion factors, armored cables are a more suitable choice because the outer metal protective layer can well protect the inner core of the cable from damage.
- If it is necessary to lay cables and wires in high drop and vertical scenes, it is recommended to choose plastic insulated cables with lightweight, simple structure, convenient operation, and easy maintenance to better complete the laying work.
- Choose an anti-corrosion cable if it is a used scene containing corrosive gas or objects.
Choose according to safety
- If it needs to be used in a scene with high requirements for environmental sanitation, it is best to choose a low-smoke halogen-free cable. Because of the material's particularity, the composition does not contain halogen, and no toxic halogen acid gas will be produced when burned.
- If you need to limit the combustion range, you can choose a flame-retardant cable, which is suitable for places with a high density, such as power stations, large-scale mining, and oil fields, and has a higher degree of safety.
- Some power consumption environments, such as nuclear power plants, subways, tunnels, etc., have stricter safety requirements. Even if a fire accident occurs, safety must be guaranteed, so fire-resistant cables must be selected to ensure normal operation for some time after burning. , the power will not be cut off immediately, which is more conducive to rescue.
Choose according to the attributes of the work
When selecting a cable, it is also necessary to refer to factors such as voltage loss, heating response, economical current density, and mechanical strength and make judgments and purchases based on working attributes.
Generally speaking, because the current load of low-voltage power lines is relatively large, it is recommended to prioritize evaluating the heating conditions when purchasing; if it is a low-voltage lighting line, it is important to consider the voltage loss.
The economical current density must be considered for high-voltage lines to achieve the most cost-effective use state. In addition, for high-voltage overhead lines, the mechanical strength of the cables must be calculated to ensure more stable use.
The above summarizes the answers to the relevant questions about how to choose the cable type, and I hope it will be helpful for you to choose suitable cable and wire products.
