How to pick a good wire and cable?

I. How to choose a good wire and cable? Wire and cable is known as the blood vessels and nerves of the national economy, from electricity, railroads, transportation, communications, construction to daily home improvement are inseparable from the wire and cable. But wire and cable in the long-term use of the process may be affected by many factors and cause the aging of the material, making the product performance decline, especially the aging of the insulation material may lead to failures or even cause a fire. So power cable manufacturers in the selection of wire and cable, try to select the cable, the wire and cable full performance is certainly stronger, but also can serve a longer life, then we should how to select wire and cable it? 1. look at the "CCC" certification mark wire and cable products are mandatory certification of the product, all manufacturers shall obtain the Chinese Electrical Product Certification Committee certified "CCC" certification, in the certificate or product on the 2. Look at the packaging where the production of products in line with the standard of formal enterprises, the production of wire and cable is very much attention to product packaging. When choosing and choosing to pay attention to the packaging is exquisite, printing to be clear, model specifications, factory name and address complete. 3. Look at the inspection report wire and cable as a product that affects people, property, has been listed as the focus of government supervision and inspection, the regular manufacturers on a cyclical basis to accept the supervision of the inspection department. Therefore, the seller should be able to provide the inspection report of the quality inspection department, otherwise, the quality of wire and cable products lack of basis.4. Measurement of the length of wire and cable length is the difference between the standard requirements and the main intuitive method of fake and shoddy products. Do not buy cheap, buy the actual meters lower than the nominal number of meters of wire and cable. Length should be consistent with the nominal number of meters. Provisions for each hundred meters allow an error of ± 0.5 m. 5. Look at the appearance of wire and cable products in line with the standard requirements, smooth and round, uniform color. The appearance of counterfeit and shoddy products is rough without luster. For rubber insulated flexible cables, the appearance is required to be round and neat, and the sheath, insulation and conductor are close and not easy to be peeled off. Counterfeit and shoddy ones are rough in appearance, large oval, low sheath, and can be torn off by hand.6. Look at the conductor conductor is glossy, and the conductor structure size meets the standard requirements. Wire and cable products in line with the standard requirements, whether it is aluminum conductor or copper conductor, are relatively bright, no oil, and thus the DC resistance of the conductor in line with the standard, with good electrical conductivity.

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