Household wire and cable purchase precautions
Release time： 2021-12-31 17:54
There are many kinds of wire in the market, according to their own power load to use the appropriate wire. Some of the wires sold on the market are cheap and some are more expensive, and some people tend to choose the cheaper ones. However, cheap wires often have a lot of performance that is not up to what he explained, which may bring a lot of safety risks to themselves. Wire production technology content is not too high, raw materials are not too much difference, if too cheap, or jerry-built, or quantity is not enough. Then how to buy? To tell you a few ways to buy:
1, wire surface mark
According to the provisions of the national standard, the surface of the wire should be marked with the manufacturer's name, product model and rated voltage. This is conducive to the use of wires in the process of problems can be found in time to the manufacturer, consumers must pay attention to this point when buying wires.
At the same time, consumers should pay attention to whether the manufacturer name, product model and rated voltage marked on the certificate are consistent with the printed mark on the surface of the wire to prevent counterfeit products.
2. Appearance of wire
Consumers should pay attention to the appearance of the wire should be smooth and flat, insulation and sheath layer without damage, clear logo printing, hand touch wire without greasy feeling. From the cross section of the wire, the thickness of the insulation or sheath on the entire circumference of the wire should be uniform, should not be skewed core, insulation or sheath should have a certain thickness.
3. Conductor diameter
Consumers should pay attention to whether the conductor diameter is consistent with the section expressed on the certificate when purchasing wire. If the conductor section is small, it is easy to cause wire heating and short circuit. It is recommended to use 1.5 square mm and above for home lighting lines. Electrical appliances with large power such as air conditioners and microwave ovens should be equipped with wires of 2.5 square millimeters or above.
4, standard use
Wiring should be standardized. It is best to use BV single core wire through the pipe for fixed lines. Pay attention to do not touch the wire when wiring, and do not touch the wire when decorating the room. Do not connect in the middle of a route; Do not touch the wire when it is connected to the electrical box (box).