What should I pay attention to when buying wires?

The purchase of wires is generally considered from the following points:

1. Conductor wire diameter - consumers should pay attention to whether the conductor wire diameter is consistent with the cross-section indicated on the certificate, if the conductor cross-section is small, it is easy to cause short circuit due to wire heating. It is recommended that the wires used in household lighting lines should be square millimeters and above; Household appliances with large power such as air conditioners and microwave ovens should use wires with square millimeters or more.

2. Wire surface mark - according to the national standard, the wire surface should have the continuous mark of the manufacturer's name, product model and rated voltage. This is conducive to finding the manufacturer in time when problems occur during the use of wires, and consumers must pay attention to this when purchasing wires. At the same time, consumers should pay attention to whether the name of the manufacturer, product model, and rated voltage indicated on the certificate are consistent with the printed mark on the surface of the wire, so as to prevent counterfeit products.

3. Appearance of wires - consumers should pay attention to the appearance of wires when purchasing wires, the appearance of wires should be smooth and flat, the insulation and sheath layers should not be damaged, the logo printing should be clear, and there should be no greasy feeling when handmolding wires. From the cross-section of the wire, the thickness of the insulation or sheath should be uniform on the entire circumference of the wire, and the insulation or sheath should not be off-core, and the insulation or sheath should have a certain thickness.

The wires produced by Yantai Xintai Cable meet the national standards and are recommended to be purchased.

Precautions for the purchase of home improvement wires.

Now there are two kinds of wires on the market, as the name suggests, the national standard is that the performance indicators of this product meet the national standards, you can use it with confidence, and the general national standard wire has the following characteristics:

1. The national standard line is 100+-5 meters per roll, if the line you buy cannot reach this length, it is a non-standard line. There are many people on the forum who buy a roll of 50 meters of line, which is obviously a decoration company to lie to you.

2. The actual thickness of the wire of the national standard should not be much different from the thickness of the line you want to buy, generally a few tenths of a millimeter, and the color of the good copper core wire is purple and reddish for the top grade, and the yellow one is inferior.

3. The insulation layer of the wire Generally, the insulation layer of the national standard wire is thinner than that of the non-standard wire (most of the non-standard wires are desperately made thick because the wire diameter cannot be reached), and it is very uniform (the non-standard wire will be thick on one side and thin on the other).

The insulation layer of the national standard wire is generally difficult to pinch off with a fingernail, but the non-standard wire is easy to be pinched off, because the insulation layer of the non-standard wire is generally made of plastic.

4. Look at the trademark The national standard line has a trademark printed by a regular machine, with the place of origin, trademark, contact**, product name, and length. One of the most important features is the length, and the regular national standard has a machine marked with 100 meters in the length column. If the column is blank or handwritten, it is non-marked.

The trademark of the national standard line has the national mandatory 3C certification mark, if there is no such mark, please do not use it.

Non-standard line ** than the national standard line is more appropriate, but the length is seriously shrunk, in fact, according to the yuan meter, buy the national standard line than buy the non-standard line is much more cost-effective, and the non-standard line indices are much worse than the national standard line, such as rated current capacity, aging time, insulation grade.

The choice of wire is related to the safety of electricity in the future, and the quality of the wire is not good, which will bury potential safety hazards in our future life, and seriously threaten life and property. Therefore, when buying wire materials, we must pay attention to some things?

1. Precautions for purchasing wires.

1. Good electrical conductivity. There are copper core wires and other wires available in the market. Copper core wire is the most practical one for interior decoration. However, copper core wires are divided into several types, including large-radius copper cores and multi-wire copper cores.

2. Wires with strong load capacity. The electricity consumption in the family is sometimes large and sometimes small, and when it is the largest, we will turn on the TV, turn on the air conditioner, turn on the computer, turn on the light, turn on the water dispenser, refrigerator, hair dryer, etc. If the load capacity of the wire is not strong, and the hot summer, it is easy for the wire to burn due to the high temperature, resulting in a fire.

3. Good waterproof performance. Some wires are easily deformed and cracked on the outside, in case there is a water leak somewhere, then it will lead to electrical appliances burning out, short circuits and even causing fires and personnel**. So be sure to have a hard outer skin and a good waterproof wire.

4. The main line must be a thick core. The so-called main line refers to the two main lines between the total power supply and all electrical appliances. The main line ratio must use thick copper core wire, because the main line is loaded with the charge of each electrical appliance, and the thick copper wire with excellent performance is required. Multi-core wires are available for bypass.

5. Length. This is one of the tricks commonly used in cutting corners, some people will say, I bought the wire marked with meters, look at it is 100 meters, you have to pay attention, he has a meter mark, but in the middle part, some profiteers are less than 10 meters. For example, after 30 meters, 40 meters will be marked.

I think it's more important to buy wires is to find reliable brands, don't choose those miscellaneous brands. Our wires are a brand recommended by my friends, and I think Guda wires are really good after use, and the quality is good. Ask for the subject greatly.

When buying wires, you need to look at the brand, and you can have the 3C logo.

The national standard line is a 100-meter roll.

Some of the non-standard lines are only 60-75 meters roll.

1. Look. See if there is a quality system certification; See whether the certificate is standardized; See whether there is the factory name, factory address, inspection seal, and production date; See if there are trademarks, specifications, voltages, etc. printed on the wires. It is also necessary to look at the cross-section of the copper core of the wire, the color of the high-grade copper is bright and the color is soft, otherwise it is a defective product.

2. Try. You can take a wire head and bend it repeatedly by hand, where it feels soft, has good fatigue strength, plastic or rubber feels elastic and there is no crack on the wire insulator is an excellent product.

3. Weighing.

wires, which 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 5 mm2 weighs kg per 100 m; 2 5 mm2 plastic insulated single-strand copper core wire weighing 3 kg per 100 m; 4 0 mm2 plastic insulated single-strand copper core wire, weighing kg per 100 m, etc. Poor quality wires are not of sufficient weight, either not long enough, or there are too many impurities in the copper core of the wire.

4. Look at the copper.

Qualified copper core wire copper core should be purple-red, shiny, and soft to the touch. The fake and inferior copper core wire copper core is purple-black, yellowish or white, with many impurities, poor mechanical strength, poor toughness, and will break with a little force, and there is often a broken wire in the wire. When inspecting, you only need to peel off one end of the wire 2 cm, and then use a piece of white paper to rub it slightly on the copper core, if there is a black substance on the white paper, it means that there are more impurities in the copper core.

In addition, the insulation layer of fake and shoddy wires seems to be very thick, but in fact most of them are made of recycled plastic, and over time, the insulation layer will age and leak, you will know at once.

1.Pay attention to whether the specifications, models, and national standards of the purchased products are the same as your conditions of use. 2.

Pay attention to the length of the wire. (The marked length of the wire is not the same as the actual length.) The actual length is less than the length of the annotation) 3

Pay attention to the materials from which the wires are made. (Some copper wires look like copper, but in fact they are not copper, but "copper-clad aluminum" and "copper-clad iron").

1. Look at the brand: brand ranking and value are the cornerstone of product quality and safety, and choosing a regular and well-known brand can avoid buying inferior products to a large extent. For example, as one of the top 500 Asian brands, one of the top 500 Chinese enterprises, and an enterprise with a brand value of 100 million yuan, Far Eastern Group has been operating with ingenuity for 38 years and has won the "National Quality Award" and has a good reputation.

2. Look at the product:

Packing: neat disc shape, good packaging, complete items on the certificate, including but not limited to trademark, factory name, factory address, **, specifications, cross-section, inspectors, etc.;

Inner core: choose copper material core with longer service life and safer, pure copper core is preferred, and the color is purple-red; In addition, it is also necessary to see whether the inner core is in the middle of the insulation wrap. Inferior wire rods have a large degree of eccentricity problems.

The eccentricity rate is high, and the thin part is easy to be broken down, which has the risk of causing a short circuit and causing fire;

Smoke: Use a lighter to burn the wire, the ordinary wire will release a toxic gas when it encounters an open flame, which will further increase the risk of short circuit and fire. When the flame retardant wire encounters an open flame, it will break off from the fire, and no toxic gas will be generated.

Therefore, it is more recommended that you install and use low-smoke halogen-free flame retardant wires, which are safer and more environmentally friendly;

Weight: The length of the national standard line, the general number of packages is marked as 100m, and the actual measurement is also full of meters and copper, with a certain weight.

The property right of general residential housing is 70 years, and the Far Eastern's "good core and high safety and environmental protection wire" can be used for 70 years, truly achieving a wiring and lifelong worry-free. In terms of appearance, the Far Eastern Group's "good series" wires are beautifully packaged, and the product certification information is complete; The raw material of the inner core is pure copper core, which has low resistivity, strong conductivity, energy saving and power saving, and achieves low eccentricity, high concentricity, anti-breakdown, and safer electricity consumption. The insulation layer is made of high-quality environmentally friendly PVC material insulation layer, which is more wear-resistant, corrosion-resistant, and age-resistant, and at the same time adds flame retardant, which has the characteristics of high-performance flame retardant, low smoke and halogen-free, non-toxic and harmless; The length of the national standard line standard is marked with 100 meters, and the actual length is 95-100 meters, and the Far East can ensure the length of 100 meters in this regard, which is better than the national standard, 3. Look at the strength, whether there are any buildings we are familiar with in the decoration of these materials, the choice of the Far East is the common choice with the Hong Kong-Zhuhai-Macao Bridge, China Zun and so on.

4. Looking at after-sales, one of the important factors that distinguish big brand wires from miscellaneous brands on the market is that there is a first-class guarantee that can be traced back to the whole process, which can effectively prevent consumers from buying counterfeit wires. Far Eastern Wire has a double after-sales guarantee, not only Pacific Insurance underwriting, 30 days no reason to return and exchange, each coil of wire packaging also has *** anti-counterfeiting protection, the whole process of traceability training, peace of mind.

1. Look at the packaging. The wire is packaged with a good foot, clear handwriting, marked with the production address and date, and the general large manufacturers will comply with the relevant national standards, so the quality is reliable.

2. Compare the cores. Open the package to see the lower core, you can compare the core with different brands of wires, if the two kinds of wires obviously have a skin that is too thick, it means that the brand wire with thick skin is unreliable, pull the wire skin hard, and it is generally the national standard that is easy to tear if the liquid is not eliminated.

3. Burn with fire. It can be burned with fire, if it is moved to the source, it is extinguished within 5 seconds, which means that it has a certain flame retardant performance and should be a national standard line.

4. Look at the inner core. The brighter the inner core material of the wire, the better the quality, and the national standard requires that the inner core must be made of pure copper.

5. Look at the online printing. The wire is printed with marks such as the name of the unit, the model, etc., and the printing is clear and evenly spaced, which is the national standard line produced by large manufacturers.

1. Load capacity. The electricity consumption in the household is sometimes large and sometimes small, and the large amount of electricity used may be used together with TVs, air conditioners, computers, lights, water dispensers, refrigerators, hair dryers, etc. If the load capacity of the wire is not strong, and the weather is hot in summer, the power supply of the wire will be overloaded, which may lead to serious consequences such as disasters.

2. Waterproof. The outer packaging of some wires is not tightly cracked, and it is easy to deform and crack. If there is a rupture and a water leak, it is likely to cause the appliance to burn out, short circuit or even cause fire and people**.

Therefore, the wire must be selected with a hard outer skin and good waterproof performance.

3. Electrical conductivity. There are copper core wires and other wires on the market. The copper core wire source sail is the most wild and practical in interior decoration. However, there are several types of copper core wires, including large-radius copper cores and multi-wire copper cores.

4. The main line should have a thick core. The main lines are the two dominant lines between the main power supply and all the appliances. The main line must use thick copper core, because the main line is loaded with the charge of each electrical appliance, and the thick copper wire with excellent performance is required, and multi-core wire can be selected for bypass.

5. Length. There are many unscrupulous merchants will fake the length of the wire, although the wire has a meter mark, but some unscrupulous merchants will undercount the middle part, resulting in a situation of less rice. Therefore, when choosing a wire, pay attention to measuring the length.

What problems should be paid attention to in wire installation?

1. Pay attention to the wiring method when installing the wire, and prevent the connector from appearing often in the process of installing the wire, if the joint often appears, it will lead to considerable resistance, and the wire will heat up. If there are frequent wire connectors, in order to prevent the recurrence of accidents, it is necessary to wrap the wire joints tightly with insulating tape.

2. Pay attention to the appropriate installation form when installing wires, and there are two different forms of concealed and surface-mounted wires. Concealed installation refers to laying wires in places such as ceilings or walls, and generally for the sake of safety, it is necessary to ask professional personnel to operate. Surface-mounted means that the wires cannot be folded or squeezed when the surfaces are installed along the surface of walls and ceilings, and the wires must be installed firmly.

3. When installing wires, pay attention to the accurate use of ground wires, such as some household appliances: refrigerators, washing machines and other electrical appliances need to use three-phase plugs, and must pay attention to the installation of first-class ground wires.