How to choose wires and cables correctly
Because wire and cable products have a close relationship with the lives of consumers, its quality and safety directly affect the personal and property safety of consumers, so the correct choice of wire and cable is very important, and then look at it specifically.
I.Take a look at the "CCC" certification mark.
Therefore, wire and cable products are national compulsory safety certification products, all manufacturers must obtain the "CCC" certification certified by the China Electrical Products Certification Committee, obtain the "CCC" certification mark, and have the "CCC" certification mark on the certificate or product.
II.Look at the inspection report
As a product that affects personal and property safety, wire and cable has always been listed as the focus of government supervision and inspection, and regular manufacturers are subject to inspection by supervision departments on a regular basis. Therefore, the seller should be able to provide the inspection report of the quality inspection department, otherwise, the quality of the product lacks a basis.
III.Focus on 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 national standards, the production of wire and cable pays great attention to product packaging. When purchasing, pay attention to exquisite packaging, clear printing, complete model specifications, factory name, factory address, etc.
IV.Looking at the appearance whether the appearance of the product is smooth and round, and the color is uniform
Ensure that the products meet the requirements of national standards, and strictly control the purchase of raw materials, production equipment, production technology, etc. Therefore, the appearance of the wire and cable products produced meets the standard requirements: smooth and round, uniform color. And the appearance of counterfeit inferior products is rough and dull. For rubber insulated flexible cables, the appearance is required to be round, and the sheath, insulation and conductors are tight and not easy to peel off. The counterfeit and inferior products have a rough appearance, large ovality, low insulation strength of the sheath, and can be torn off by hand.
V.Look at the conductor, the conductor is glossy, DC resistance, conductor structure size, etc. meet the requirements of national standards.
Products meet the requirements of national standards of wire and cable enterprises, in order to improve product quality, in line with the requirements of national standards of wire and cable products, whether aluminium material conductors, or copper material conductors are relatively bright, no oil pollution, so the DC resistance of the conductor fully complies with the national standards, has good conductivity, high safety.
VI.Measure length
Length is the main intuitive way to distinguish products that meet the requirements of national standards and counterfeit inferior products. When purchasing, do not covet cheap prices, choose 90m or 80m, or even no length identification of wire and cable, the length must meet the requirements of 100±0.5m standard, that is, 100 meters as the standard, the allowable error is 0.5 meters).
In addition, the purchase of wire and cable should also consider its use, usually according to the size of the electrical power to calculate the wire current, and then according to the current size of the purchase of wire and cable specifications.
