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What are the considerations for the selection of wires and cables?

Release time:

2023-12-07 10:57

Check the CCC certification mark. Wire and cable products are national mandatory safety certification products. All manufacturers must obtain the CCC certification of the China Electrical Products Certification Committee, and have the CCC certification mark on the certification or product.

Look at the inspection report. As a product that affects personal and property safety, wire and cable has been listed as the focus of government supervision and inspection. Regular production enterprises are subject to regular inspections by regulatory authorities. Therefore, the supplier should be able to provide the quality inspection department of the inspection report, otherwise, the quality of wire and cable products is lack of basis.

Look at 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 model specifications, factory name and address.

Look at the appearance. The appearance of high-quality wire and cable products meets the standard requirements, smooth and round, uniform color. The appearance of fake and inferior products is rough and dull. Rubber insulated flexible cable, round shape, sheath, insulation and wire is not easy to fall off. Fake and inferior products have rough appearance, large ovality, low insulation strength of the sheath, and can be torn by hand.

Look at the conductor. The wire is smooth, and the DC resistance and wire size meet national standards. 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 is fully in line with national standards, with good conductivity and high safety.

Measure the length of the wire and cable. Length is the main intuitive way to distinguish fake and shoddy products that meet the requirements of national standards. When choosing and buying, do not covet cheap. Select wires and cables whose actual meters are less than their nominal meters. The length must correspond to the nominal number of meters. The allowable error stipulated by the state is every 100 meters (0.5) meters.