It turns out that you can also distinguish the advantages and disadvantages of the cable in this way!
Source: Cable recruitment network release time: 2019-03-22 16:36:03
Now the market is full of products, flowers and hundreds of doors. Just the wire and cable industry, do not rule out the Shanzhai products mixed in it, silently affect our lives, to our lives buried hidden dangers.
If fake and inferior wires and cables are used, light may cause short circuits, electric shocks, and breakdown. Heavy may cause fires and cause casualties. In recent years, the fire in Chengdu has been caused by electrical faults, and the "shrinking" black core wire and cable is one of the main culprits.

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So how do you tell the difference?

Look at the label.
The contents of the wire qualification certificate produced by a regular manufacturer shall include: 3C certification mark, certification number, model specification, execution standard, rated voltage, wire length, production date, producer, inspector, factory name, factory site, fixed telephone, Anti-Counterfeiting mark, etc.. The labels of counterfeit products are often poorly printed or printed.
Look at the surface.
The plastic skin of the regular wire is soft and smooth, and the color is uniform. On its surface, several contents on the product qualification certificate should also be printed, such as: 3C certification mark, certification number, model, rated voltage, execution standard, factory name, etc.. At the same time, the handwriting must be clear and not easily erased.
Try bending.
It is advisable for a wire head to be bent repeatedly by hand. Any product that feels soft, has good fatigue resistance, has large plastic or rubber hand elasticity, and has no cracking on the wire insulator is excellent. The fake wire insulation layer looks very thick. In fact, most of them are made of recycled plastics. As long as they are squeezed slightly, the extrusion will be white, and there will be a broken line phenomenon when they bend 4 to 6 times.
Rip the insulation.
High quality insulation materials have a certain degree of mechanical strength and flexibility, easy to tear open. The inferior wire can be torn off or pinch off by hand;
Watch the burn.
According to regulations, the insulation layer of the wire has a certain degree of flame retardancy. Stripping off a section of insulation, ignited with a lighter, can continue to spontaneously ignite after leaving the open fire is the inferior line.
Test thickness.
Interception of an insulating layer to see whether the insulation section is visible to the naked eye, whether the core of the line is located in the middle of the insulating layer. The non-center is due to the partial core phenomenon caused by the low process, and the stomata indicate that the insulation used is not qualified. Eccentricity is most likely to leak on the thinner side, and stomata also affect compressive strength.
Look at the copper wire.
The color of high-quality copper wire is bright red, while the inferior copper core line is purple, black, yellow or white, hardness is large, impurities are many, mechanical strength is poor, toughness is not good, and a little force will break, and the wire is often broken. For multiple soft wires, touch the top of the copper wire with the Palm, the feeling should be flat, and there is no tingling, and the feel is soft. Otherwise it's a bad wire.
Look at the price.
Due to the low cost of making fake and inferior wires, when selling, vendors often sell low prices under the guise of cheap and cheap goods, making people fall into the trap.

According to the above simple verification methods, it is basically possible to identify whether it is a good or bad wire. If you need to speak with data, use the appropriate instrument to detect the length, diameter, thickness, resistance, pressure resistance, and strength of the wire.
Everyone wants to buy every product is low price, good quality, but many people only pay attention to the low price in front, and ignore the good quality. The price war in the market has thus become more and more fierce, becoming an era of low-cost rule, except for price war or price war. You only pay attention to my unit price, but did not pay attention to my quality, so ignore a key point: low prices distort quality! After all, manufacturers still need to make money, do not lose business.
  
Wire and cable products, high-quality copper conductors can be replaced with impurity copper or doped with other substances; PVC materials can be replaced with recycled insulation materials, copper cores are fine, the length is shrinking, and the methods of cutting materials are varied. The process varies greatly, the material is thick and thin, the texture is strong and weak, and the life span is long and short.

Identification of inferior wires and cables:
Look at the label printing sample, the handwriting is unclear.
Use the hand twist to rub the insulation skin, drop the color and lose the quality of the word difference.
Then use the nails to row the lines and cut off the skin lines.
Repeatedly bend the insulation line and break it three to four times.
Light the line insulation with fire and leave the fuse to spontaneously ignite.
The wire core is commonly used for aluminum and copper, and the color is dark and shiny.
Fine inner diameter and outer diameter, see pineal pine in weight.
-The text is derived from the Internet. If there is any infringement, please contact the author.