How to analyze the advantages and disadvantages of the copper wire of the data cable?

The original data cables are made of high-quality and relatively expensive materials, and the mischievous secretary Xu I'an often uses some poor materials. So in comparison, there is a sharp contrast between the good and the bad. How to analyze the quality of the copper wire of the data cable?

The first thing I want to say is that generally high-quality copper wires and cables are relatively soft, and the plastic on the surface is elastic. If we repeatedly bend the copper wires and cables by hand, the corresponding insulators will not appear. Cracking.

Moreover, the plastic skin of its insulating layer is bright and shiny, and no open flame will appear when it is ignited. Another way is to see if the copper wire core is in the middle of the insulation layer. Because if it is not centered, it is possible to pass through the thin side when a large current passes.

Therefore, copper wires and cables with a non-centered copper core are inferior cables. The third method depends on whether the specifications are formal. In the relevant regulations, the error of the length of the copper wire wire and cable cannot exceed 5%, and the cross-section wire diameter cannot exceed 0.02%.

If you do not meet the requirements at the time of purchase, then do not go through the purchase. When we can check according to the above three points when buying, we should be able to buy high-quality copper wires and cables.