How to judge the quality of the cable

Take a look, a fold, a burning "direct contact method to determine the quality of the wire.

At first glance, it means that the purchased wire can judge the quality of the product by observing the quality of the exposed copper core in the cross section. The qualified copper core should be purple-red, shiny, and soft to the touch; while the copper core of counterfeit products is often purple-black, yellowish, and has many impurities. One fold means that consumers can choose a wire head and use repeated bending to check the quality of the wire. Qualified wire will show the characteristics of plastic, rubber or elasticity of outer package, soft hand, and good anti-fatigue strength when it is bent. After repeated bending, there is no change in the material of the insulating surface of the wire and there is no crack. One burn means that consumers can use fire for simple burning tests. Most of the formal wires are designed with heat and fire resistance in mind. Therefore, when burning, the surface insulator burns slowly, and the smoke is relatively small and smokeless. Some fire-resistant wire products and even alcohol torches cannot ignite. , And after the end of the combustion heat dissipation faster; and for non-qualified wire, fire roasted very quickly and coherent combustion, while emitting a lot of smoke. In this way, the quality level of the wire can be judged more intuitively.

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