source:Industry News Popular:adapter release time:2021-05-21 14:04:50 Article author:sznbone
The power cord is a key daily necessities for everyone, especially for home decoration, office and manufacturing lighting fixtures. Many fires are caused by the quality of the power cord, and may be caused by the application of low-quality power cords. Therefore, consumers must keep their eyes open when buying wires, distinguish them carefully, and take precautions.
The state stipulates that copper-core insulated wires should be used in building houses, offices, and manufacturing lighting fixtures, but they are also copper transmission lines, and there are also shoddy copper transmission lines. The copper core is made of remanufactured copper, which contains many residues. The conductivity of some fake and inferior copper transmission lines is even inferior to that of thin iron wires, which is very easy to arouse electrical equipment safety accidents. Nowadays, there are many well-known brands of electric wires in the sales market, and the prices are disorderly. It is difficult for consumers to choose. In terms of the price of 2.5 cubic millimeters and 4 cubic millimeters of copper core cables commonly used in home decoration, office and manufacturing lighting fixtures, a roll of power cords of the same specification and model is 10% apart due to conflicts between manufacturers. --20%, or even greater, consumers cannot judge whether the quality is good or bad, whether the length is qualified.
The price difference of power cords is often quite big, which is caused by the contradiction of commonly used raw materials in the manufacturing process. The key raw materials for the production of power cords are copper wire, insulating layer materials and insulating sheath materials. Today, the copper wire in the sales market is below 48,000 yuan per ton, and the purchased miscellaneous copper is below 40,000 yuan per ton; the price of high-quality materials for pure natural insulating layer materials and sheathing materials is 7,000 yuan per ton- -9,000 yuan, and the defective product may be rebuilt at only 4,000 yuan and 5,000 yuan per ton, with a large price difference. In addition, the lack of length and the insufficient amount of glue in the insulator are also the key reasons for the price difference. The length of each coil of wire is 100±0.5 meters for high-quality products, which is at least 99.5 meters per roll, while the defective product is only 95 meters, which is called the national standard, and some even only 80 meters. After comparison, consumers can see that the difference in the sales price of the power cord in the market is the difference in materials.
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