Judging the quality of power cables can be carried out from the following aspects:

1. Observe the appearance and packaging: the appearance of national standard cable products should be smooth and round, with uniform color. Exquisite packaging, clear printing, model specifications, factory name, factory address and other complete.

2. Check conductor: the conductor copper core of national standard cable products should be purple red, bright color and soft feel. The copper core of the inferior cable is mostly purple and black, yellow or white, many impurities, poor mechanical strength, poor toughness, and a little force will break.

3. Check the insulation layer: the insulation layer of national standard cable products is soft, ductile and flexible, the surface is tight, smooth, no rough feeling, and has a pure gloss. The insulation layer of inferior cables seems to be very thick, but in fact, most of them are made of recycled plastic, and over time, the insulation layer will age and leak electricity.

4. Check the length and label: according to the regulations, the cable length must meet the standard requirements of 100±0.5m. At the same time, the cable must be marked with the certification mark, manufacturer, and cable diameter, and the handwriting is clear and not easy to erase.

5. Test performance: The performance of the cable can be judged by simple testing. For example, burn the insulation layer with a lighter, if there is an open fire or a lot of smoke, it indicates that the quality of the insulation is not good. Or bend the cable repeatedly to see if it is easy to break or if the insulation is easy to crack.

To sum up, judging the quality of the cable needs to be comprehensively considered from many aspects such as appearance, conductor, insulation layer, length marking and performance testing.

Qingdao Tianxing Cable Co., Ltd. focuses on the production of customized wire and cable manufacturers, main: fire wire and cable, power cable, control cable and other products, exported to more than 40 countries and regions around the world, the annual production capacity of 1 billion yuan. 6000 square meters of storage, standing hundreds of millions of inventory, order demand for rapid distribution and delivery, large prices more favorable.