Many people are unfamiliar with wires and cables in their homes, and don't even know the wiring of their homes. But in fact, as the basis of family life, the wire is crucial.
Therefore, the quality of home wire is very important, not only related to the safety of household electricity and life safety, but also related to the overall layout and beauty of family decoration.
And if wiring is buried in the wall line, once the selection of low-quality wire, the future of the line aging, repair will be very troublesome. So we must purchase fine polish eyes yo ~
Then, the peacock to teach you how to choose high-quality wire and cable:
1. Surface mark of electric wire
According to the national standard, the surface of the wire should have the manufacturer name, the product model and the rated voltage continuous mark. This is conducive to the timely use of wires in the process of problems to find the manufacturing plant, consumers must pay attention to this point in the purchase of wire.
At the same time, consumers should pay attention to the certificate is marked on the manufacturer name, product type, rated voltage and wire surface printing signs are consistent in the purchase of wires, and whether there is a national mandatory product certification "CCC" certification and production license number, to prevent counterfeit products.
2, wire appearance
Consumers should pay attention to the surface of the wire should be smooth and smooth, the insulation and sheath layer is not damaged, and the mark is printed clearly. The insulation or sheath is soft, tough, compact and smooth, with no roughness and luster. Look at the thickness of the insulation layer, uniform thickness.
Both of the low eccentricity can be. A piece of wire can be bent repeatedly by hand. It is soft and elastic, and the insulation of wire is no crack. It is a good product.
Look at the wire core, choose pure copper raw materials, and through or strict wire drawing, annealing (softening), stranded wire core, its surface should be bright, no burr, stranding, tightness degree.
Weight and length of measuring wire
3. Conductor line diameter
Consumers should pay attention to whether the conductor diameter is consistent with the express section of the certificate in the purchase of wire. If the conductor cross section is small, it is easy to cause the wire to heat and cause short circuit.
It is suggested that home lighting line should use 1.5 square meters or more power household appliances, such as air conditioner, etc., more than 2.5 square meters of wire should be adopted.