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What are the precautions for wire and cable selection?
Date：2022/3/23 Clicks：626
Check the CCC certification mark. Wire and cable products are national mandatory safety certification products. All manufacturers must obtain the CCC certification of China Electrical Product Certification Commission, and have the CCC certification mark on the certification or products.
See inspection report. As products that affect personal and property safety, wires and cables have always been listed as the focus of government supervision and inspection. Formal production enterprises are subject to regular inspections by regulatory authorities. Therefore, the supplier should be able to provide the inspection report of the quality inspection department, otherwise, the quality of the wire and cable products will lack basis.
Check out the packaging. All enterprises that produce products according to national standards attach great importance to product packaging. When purchasing, pay attention to the exquisite packaging, clear printing, complete models and specifications, factory name and address.
Check out the look. The appearance of high-quality wire and cable products meets the standard requirements, is smooth and round, and the color is uniform. Counterfeit and shoddy products are rough and dull in appearance. Rubber insulated flexible cable with round shape, sheath, insulation and wires are not easy to fall off. Fake and shoddy products have rough appearance, large ovality, and low insulation strength of the sheath, which can be torn by hand.
See conductors. The wire is smooth, and the DC resistance and wire size conform to the national standard. Wire and cable products that meet the requirements of national standards, whether aluminum conductors or copper conductors, are relatively bright and oil-free, so the DC resistance of the conductors fully meets the national standards, with good conductivity and high safety.
Measure wire and cable length. Length is the main intuitive method to distinguish counterfeit and shoddy products that meet the requirements of national standards. When choosing and buying, don't be greedy for cheap. Select wires and cables with actual meters less than their nominal meters. The length must correspond to the nominal meter. The state stipulates that the allowable error is every 100 meters (+0.5) meters.
See inspection report. As products that affect personal and property safety, wires and cables have always been listed as the focus of government supervision and inspection. Formal production enterprises are subject to regular inspections by regulatory authorities. Therefore, the supplier should be able to provide the inspection report of the quality inspection department, otherwise, the quality of the wire and cable products will lack basis.
Check out the packaging. All enterprises that produce products according to national standards attach great importance to product packaging. When purchasing, pay attention to the exquisite packaging, clear printing, complete models and specifications, factory name and address.
Check out the look. The appearance of high-quality wire and cable products meets the standard requirements, is smooth and round, and the color is uniform. Counterfeit and shoddy products are rough and dull in appearance. Rubber insulated flexible cable with round shape, sheath, insulation and wires are not easy to fall off. Fake and shoddy products have rough appearance, large ovality, and low insulation strength of the sheath, which can be torn by hand.
See conductors. The wire is smooth, and the DC resistance and wire size conform to the national standard. Wire and cable products that meet the requirements of national standards, whether aluminum conductors or copper conductors, are relatively bright and oil-free, so the DC resistance of the conductors fully meets the national standards, with good conductivity and high safety.
Measure wire and cable length. Length is the main intuitive method to distinguish counterfeit and shoddy products that meet the requirements of national standards. When choosing and buying, don't be greedy for cheap. Select wires and cables with actual meters less than their nominal meters. The length must correspond to the nominal meter. The state stipulates that the allowable error is every 100 meters (+0.5) meters.
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