1. Well-packaged roller packaging can reduce the wear and tear of the insulation layer caused during production, transportation and handling, and facilitates installation by electricians.

There is a complete certificate in the package. The certificate should include complete information such as specifications, execution standards, rated voltage, length, date, factory name and address.

2. Whether the wire packaging mark has the "CCC" and production license number of China's compulsory product certification; see if there is a quality system certification; see if the certificate is standardized; see if there is a factory name and address , maintenance stamp, production date; check whether there are trademarks, specifications, voltage, etc. printed on the wires.

Also look at the cross-section of the copper core of the wire. High-quality copper is bright in color and has a soft luster. The copper core is yellowish and reddish, indicating that the copper material used is of better quality, while yellowish and whitish copper is low-quality copper. reflection of material.

3. Check the process. Cut off a section of the insulation layer to see if the core is located in the center of the insulation layer.

What is not centered is the eccentric phenomenon caused by low craftsmanship. If the power is small during use, it will be fine. Once the power consumption is large, the thinner side is likely to be broken down by current.

In the field test, you can take a piece of wire and bend it repeatedly by hand. Any wire that feels soft, has good fatigue resistance, has high plastic or rubber feel and has no cracks on the wire insulation is a high-quality product.

The outer plastic skin of the wire should be bright in color and fine in texture, and there should be no open flame when lit with a lighter.

4. When checking the size of the wire, be sure to check its length and core thickness to see if there are any physical movements.

It is stipulated in the relevant standards that the error in the length of the wire cannot exceed 2, and the cross-sectional wire diameter cannot exceed 0.02. However, there are a large number of wires on the market that are short in length and falsified in the cross-section (such as marked A line with a cross-section of 2.5 square millimeters is actually only 2 square millimeters thick).

5. Look at the thickness and color. Jiuzheng Home Furnishing Network reminds consumers that they can cut off the red, blue, yellow/green wires and open a section.

Due to the use of low-quality raw materials and poor production processes, the fake wires are dark in color or severely oxidized, and the wires feel hard and have inconsistent thicknesses.

The conductors of authentic wires have the same thickness, and the copper wire color has a particularly bright metallic luster.

At the same time, you can also see that the outer plastic skin of the wire is bright in color and fine in texture.

6. Look at the insulating rubber. The insulation layer of fake and inferior wires seems to be very thick. In fact, most of them are made of recycled plastic. As long as you squeeze it with a little force, the squeezed area will turn white and have powder. fall.

Good 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 ??1.5mm2 weighs 1.8~1.9kg per 100m.