Wire and cable as the main carrier of power transmission, widely used in electrical equipment, lighting lines, household appliances, etc., the quality of its quality directly affects the quality of the project and the consumer's life and property safety. In the market there are many varieties of wire, according to their own electrical load to use the appropriate wire.

Some of the wires sold on the market are cheap and some are more expensive, some people tend to compare the first cheaper, however, cheap wires, there are often a lot of his instructions do not meet the performance, there may be a lot of safety hazards to themselves. Wire production technology is not too high, the raw material is not much difference, if too much cheaper, either cutting corners, or the number does not give enough. How to sign it. I give you a few easier to sign other methods:

1, look to see the packaging, the national standard wire tend to do better, neat, hand up a sense of quality.

2, to open the package to look at the wire inside, the national standard wire 1.5 -----6 square wire requirements is the skin thickness (insulation thickness) is 0.7mm, too thick is non-standard, accordingly, his core is certainly not enough, the wire skin you can pull a little harder, not easy to tear is generally the national standard 3, with a fire, leave the 5s extinguished, there is a certain flame-retardant features For the national standard line.

4, look at the inner core, the inner core of the material (copper) the higher the brightness the better the copper, and luminosity uniform, glossy, no hierarchy. The national standard requires that the inner core must be oxygen-free copper. Non-standard such as black rod copper, there may be potential accidents.

5, the thickness of the core of the state has certain requirements, but not very strict. However, it will not be wrong a lot, just a very small bit, the general eye can not see the error.

6, length, the state is not mandatory to hit the meter, but there are many manufacturers also hit the meter, hit the meter is not necessarily the national standard, but the general national standard generally did not hit the meter. Non-standard meter that is just a means.

7, the state regulations on the wire must be hit with a certain logo, the maximum will not exceed 500mm will have the next same logo hit out, above the general product trademarks, manufacturer's name, the implementation of standards and so on.