Power lines are widely used in our daily life, especially in temporary lines and indoor lines for home decoration. Recently, fire and electric shock accidents caused by the use of low-quality wires have occurred from time to time. Xintai solid copper needle teaches you how to identify the authenticity of the power cord?

The wire insulation layer is not made of high-quality insulating plastic, but made of recycled plastic. The insulation layer can be stripped off with a gentle peel, which is very easy to cause the insulation layer to be hit by current and leak electricity, which poses a great threat to the safety of users' lives and property.

The DC resistance of conductive wire core is unqualified. The thickness and advantages and disadvantages of the wire conductor determine the current load of the wire. If the wire core adopts inferior materials and the actual section is far less than the indicated specifications, the conductor resistance will cause heating and cause the risk of electrical fire in long-term use.

Xintai solid copper needle means to introduce the method of distinguishing the power line according to the actual situation:

1. Look at the label. The content of wire certificate produced by regular manufacturers shall include: 3C certification mark, certification number, model and specification, executive standard, rated voltage, wire length, production date, manufacturer, inspector, factory name, address, fixed telephone, anti-counterfeiting mark, etc. The labels of counterfeit products are often printed unclear or incomplete.

2. Look at the surface. The plastic skin of regular wires is soft and smooth, and the color is uniform. Several items on the product certificate shall also be printed on its surface, such as 3C certification mark, certification number, model, rated voltage, executive standard, factory name, etc. At the same time, the handwriting must be clear and not easy to erase.

3. Try bending. A wire head can be bent repeatedly by hand. Those with soft hand feeling, good fatigue resistance, large hand elasticity of plastic or rubber and no crack on the wire insulator are excellent products. The insulation layer of fake and shoddy wires looks very thick. In fact, most of them are made of recycled plastic. As long as you squeeze it with a little force, the extruded part will become white, and there will be wire breakage after bending for 4 ~ 6 times;

4. Tear off the insulation. High quality insulating materials have certain mechanical strength and flexibility, which can not be torn easily. A piece of inferior wire can be torn off or pinched off by hand;

5. Look at the burning. According to regulations, the insulation layer of wires has certain flame retardancy. Peel off a section of insulating layer and ignite it with a lighter. The inferior wire can continue to spontaneous combustion after leaving the open fire.

6. Check the thickness. Cut off a section of insulating layer to see whether there are visible pores on the section of insulating layer and whether its wire core is located in the middle of insulating layer. What is not in the center is the core deviation caused by low process. If there are pores, it indicates that the insulating material used is unqualified. Serious eccentricity is most likely to cause leakage on the thinner side, and air holes also affect the withstand voltage strength.

7. Look at the copper wire. The color of high-quality copper wire is bright and red, while the inferior copper core wire is purple and black, black, yellow or white, with high hardness. Xintai solid copper needle means that for multi strand flexible wires, gently touch the top of the copper wire with the palm of your hand. It should feel flat, without tingling, and feel soft. Otherwise, it is inferior wire.

8. Weigh. High quality wires are generally within the specified weight range. For example, the commonly used plastic insulated single strand copper core wire with a cross-sectional area of BV 2.5 mm2 is 3.0 ~ 3.2 kg according to the weight of 100 m. The weight of poor quality wires is insufficient because either the length is not enough or the wire section is not enough.