Tips for selecting wires and cables correctly

Proper selection of wires and cables can ensure the electrical safety of home use, and the same goes for the decoration process. Therefore, when choosing wires and cables, the following points should be noted.

1、 Check the certification mark, recognize the certificate of conformity mark, have the "CCC" certification mark, have the ISO9002 quality system certification mark, and have a valid certificate of network recognition from the State Administration of Radio, Film and Television.

2、 Judging by quality, the appearance is smooth and round, the color is bright and uniform, and the texture is fine and dense; The wire has certification marks, manufacturer, wire diameter, etc. The ground wire is insulated with a yellow green insulation layer, which has a smaller appearance and uniform color, and the insulation shell is not damaged or worn.

3、 Looking at the inner core, the higher the brightness of the material (copper), the better the copper quality, and the brightness is uniform, glossy, and without any layering. The national standard requires that the inner core must be made of oxygen free copper. Non standard materials such as black rod copper may pose potential safety hazards.

4、 Look at the insulation layer, good wire has good toughness, insulation, and stretchability, and the surface is tight without roughness; Poor quality wires have white bodies, stiff insulation layers, twisted and uneven surface defects.

5、 Judging from the quality of copper, high-quality wires have a shiny, smooth, and less prone to breakage copper core surface; The inferior copper core has a dark color, and the wire feels hard and uneven in thickness.

6、 Judging from the manufacturing process, you can cut a wire end and repeatedly bend it by hand. If it feels soft, has good fatigue resistance, has a strong plastic or rubber feel, and there are no cracks on the wire insulation, it is a superior product.

Wire and cable are closely related to our daily life, including home decoration, power supply for new enterprises, factory renovation, and connection of new energy appliances. Therefore, it is important to master the skills of correctly selecting wires and cables.