As the primary carrier of power transmission, UL electronic wires and cables are widely used in household appliances, electrical equipment, lighting lines and other aspects. Their quality directly affects the engineering quality and the safety of customers' lives and property. Cheap wires, often have many can not reach the function of the product, there may be a lot of security risks to themselves. Wire production technology content is not too high, raw materials are not too different, low-cost wire, either is shoddy, or the quantity is not enough.

Some of the UL wires sold in shopping malls are cheap, some are expensive, and there are many kinds of them. How can we distinguish them?

Electronic wire brand

First, open the package to see the next side of the wire, the national standard 1.5 ~ 6 square wire requires the outer skin thickness of 0.7mm (refers to the insulation thickness), too thick is non-standard, the corresponding inner core must not be enough, as long as you pull a line of leather, the knowledge is not easy to tear is generally consistent with the national standard wire.

2、 Look at the inner core, the higher the brightness of the raw material (copper) of the inner core, the better the copper quality, and its luminosity is uniform, glossy, and has no sense of hierarchy. According to the national standard, the inner core must be made of oxygen free copper. Non standard products such as black rod copper may have potential accidents.

3、 Look at the packaging, the national standard wire is often done better, neat, holding up a sense of quality.

4、 Check the length: the state does not force that the unit meter must be marked on the electric wire. There are many manufacturers on the market who will mark the unit meter. It is not necessarily the national standard to mark the unit meter.

5、 If you burn it with fire, the wire that can be extinguished within 5 seconds after the war will have a certain flame retardant function. This wire is the national standard line.

6、 According to the national standard, the wire must be marked with relevant marks every other interval, and the maximum interval should not exceed 500mm. The logo usually has the product trademark, manufacturer's name, performance standards, etc.

7、 There are certain requirements for the thickness of the inner core in the national standard, but it is not very strict, but it will not be very bad. It is just a little bit small, and there are always errors that can not be seen with the naked eye.