Identifying cables can be approached from several aspects
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To determine the quality of a cable, one can start by using several simple methods: 1. The uniformity and smoothness of the cable’s surface (high-quality cables have a fairly uniform and smooth surface)； 2. A higher tear strength of the cable’s outer cover and insulation is preferable (of course, with the exception of cases where users require easy tearing) ； 3. Conductors that exhibit excellent brightness, softness, and uniformity in wire diameter are considered of high quality ； 4. The centrality of the conductor within the insulator; no eccentricity indicates a relatively good condition ； 5. Shielding density: higher values result in better interference resistance ； 6. The outer covering of cables designed for installation in engineering applications should be tightly fitted (the covering does not wrinkle easily when passed through tubes, ensuring good integrity). Mechanical equipment and household electrical appliances require a smooth surface finish, with appearance being a key consideration. 7. High-quality wires and cables have no odor or only a very slight, unobtrusive smell when sniffed; low-quality ones, due to the use of inferior materials and excessive additives in recycled materials, have a pungent and unpleasant odor. 8. The conductor can be pulled out easily by hand; strong bending of the insulation and sheath results in a whitening, indicating that the quality of the plastic is very poor ； Insulation is difficult to peel off with fingernails; if it can be peeled off easily, it indicates that the quality of the plastic is low. The above are only simple methods for identifying cables; of course, there are many ways to identify cables, and more will be introduced in the future. In short, going to the factory in person to check whether the manufacturer uses high-quality raw materials, employs reasonable manufacturing processes, maintains strict quality control, ensures that workers are diligent, keeps the working environment clean, and has competent management is a good way to avoid problems.
As a supplementary note, the insulation and sheath layers of wires and cables should have a pleasant feel to them, with no roughness or stickiness; otherwise, it indicates that the quality of the plastic is poor.
Thank you to the original poster for sharing the information! ! ! ! ! ! !
Visual assessment is one aspect; it is also necessary to look at the manufacturer’s quality system, as well as the insulation, jacket materials, and conductors.