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As wire and cable products are closely related to the lives of consumers, its quality and safety have a direct impact on the safety of people and property of consumers. Therefore, the correct choice of wire and cable is very important:
1, look at the "CCC" certification mark. Therefore, wire and cable products are national compulsory safety certification products. All production companies must obtain the “CCC†certification from the China Electrotechnical Products Certification Committee, obtain the “CCC†certification mark, and have the “CCC†certification mark on the certificate or product.
2, see the inspection report. Wire and cable, as a product that affects personal and property safety, has long been listed as the focus of government supervision and inspection, and regular manufacturers are inspected by the supervisory department on a periodic basis. Therefore, the seller should be able to provide inspection reports of the quality inspection department, otherwise, the quality of the product is lack of evidence.
3, pay attention to packaging. The packaging of wire and cable products is the same as other products. All large and medium-sized formal enterprises that produce products that meet the requirements of the national standards, the production of wire and cable is very focused on product packaging. When purchasing, please pay attention to the exquisite packaging, the printing should be clear, and the model specifications, the name of the factory, and the site should be complete.
4, look at the appearance, product appearance is smooth and round, uniform color. The wire and cable enterprises whose products meet the requirements of the national standards shall strictly control the purchase of raw materials, production equipment, and production techniques in order to improve product quality and ensure that the products meet the requirements of the national standards. Therefore, the appearance of the wire and cable products produced meets the requirements of the standard: smooth and round, uniform in color. The appearance of counterfeit and inferior products is rough and dull. For the rubber-insulated flexible cable, the appearance is required to be round and the sheath, insulation, and conductor are not easily peeled off. The counterfeit and inferior products have rough appearance, large ovality, and low insulation strength of the sheath, and can be removed by hand.
5, look at the conductor, the conductor is shiny, DC resistance, conductor size, etc. meet the requirements of national standards. The products of wire and cable that meet the requirements of national standards, whether aluminum conductors or copper conductors, are brighter and free of oil. The DC resistance of conductors is in full compliance with national standards, and it has good electrical conductivity and high safety.
6, the length of the amount. The length is the main intuitive method of distinguishing between the requirements of national standards and counterfeiting of inferior products. When purchasing, do not covet for cheap, buy 90m or 80m, and even no length of the wire and cable, the length must meet the 100 ± 0.5m standard requirements, that is to 100 meters as the standard, the allowable error of 0.5 meters).
In addition, the purchase of wire and cable must also consider its use, usually based on the size of the power of the electric wire to calculate the current of the wire, and then select the wire size according to the current size.
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