Wire is an essential building material for home decoration, and it is also an important part of the hidden project. The quality of the wire passes through and it directly affects the effect of decoration and the safety of electricity. So how to choose the decoration of the wire it? Which wire is the safest? Which wire is the safest to choose? A good roller package can reduce the wear of the insulation layer during production, transportation and handling, and facilitate installation by electricians. There is a complete certificate in the package. The certificate should include complete information such as specifications, execution scale, rated voltage, length, date, and factory name. Which wire is most safe to choose? Whether there is China's national compulsory product certification "CCC" and production license number; see if there is a quality system certification; see whether the certificate is standardized; see if there is a factory name, site, maintenance chapter, production date; see if the wire is printed There are trademarks, specifications, voltage and so on. It also depends on the cross section of the wire copper core. The superior product has a bright copper color and soft luster, and the copper core is reddish yellow, indicating that the used copper material is of good quality, while the yellow and white hair is a reflection of the low quality copper material. Which wire is most safe to choose? 3. Check the manufacturing process Take a section of insulation to see if the core is in the middle of the insulation. Non-centered is due to the fact that the process is not high and the core-bias phenomenon is caused. If the power is low, it can still be an easy task. Once the power is used, the thinner side may be broken down by the current. In field tests, it is advisable to use a wire head repeatedly bent by hand, and it is an excellent product that has a soft hand, a good anti-fatigue strength, a large plastic or rubber feel elasticity, and no cracks on the wire insulation. The outer plastic skin of the wire should be brilliance and texture, and there should be no open flame when lit with a lighter. Which wire is the safest to choose? Check the wire size Be sure to look at its length and core thickness for any limb movements. Delineated in the relevant scale, the error of the length of the wire cannot exceed 2%, and the diameter of the cross-section cannot exceed 0.02%. However, there are a lot of short-cuts in length on the market, and fraud in the cross-section (if the cross-section is 2.5 square millimeters) The line is actually only 2 square millimeters thick. Which wire is the safest to choose? 5. Look at the thickness and see the color Deliberate readers can cut red, blue, and yellow/green wires and shave them. Due to the use of low-quality raw materials and poor production processes, the false color of the copper wire is dark or seriously oxidized, and the wire feels hard and the thickness is not uniform. The wire thickness of the authentic wire is the same, and the copper wire has a particularly bright metallic luster. At the same time, we can also see the bright color and fine texture of the outer plastic skin of the wire. What kind of wire is the most safe to choose? 6. Look at the insulating rubber The counterfeit wire insulation seems to be very thick. In fact, it is mostly made of recycled plastic. As long as it is squeezed slightly, the extrusion will be white and powder will fall. Good quality wires are generally within the designated weight range. For example, a plastic insulated single-stranded copper wire with a cross-sectional area of ​​1.5 mm2 is commonly used, and the weight is 1.8 to 1.9 kg per 100 m. Electric wire air conditioning air conditioning price switch door price electrical 
