What is the difference between national standard wire and cable and American standard wire and cable

Cables include power cables, control cables, compensation cables, shielded cables, high-temperature cables, computer cables, signal cables, coaxial cables, fire-resistant cables, marine cables, and so on. They are all made up of stranded wires that are used to connect electrical circuits, electrical appliances, etc. Wires and cables mainly include bare wires, magnet wires, insulated wires for electrical appliances, power cables, communication cables and optical cables.

Wires and cables refer to materials used for electricity, communications, and related transmission purposes. There is no strict boundary between "wire" and "cable". Generally, the products with a small number of cores, small product diameter and simple structure are called wires, those without insulation are called bare wires, and the others are called cables; The larger conductor cross-sectional area (more than 6 square millimeters) is called a large wire, the smaller one (less than or equal to 6 square millimeters) is called a small wire, and the insulated wire is also called a cloth wire.

Shanghai Baoyu wire and cable manufacturing ****.

The national standard line is a 100-meter roll, and the non-standard line has only more than 80-95 meters of volume, generally 95 meters, and the 95 line is this kind of 95 meters but marked with a 100-meter non-standard line.

It depends. See if there is a quality system.

Certificates; 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, and the high-grade copper.

The color is bright and the color is soft, otherwise it is defective.

To try. A wire head can be repeatedly bent by hand, where it feels soft, has good fatigue strength, plastic or rubber feels elastic and the wire is insulator.

If there is no crack on it, it is a superior product.

Weighing. wires, which are generally within the specified weight range. As commonly used cross-sectional area is.

mm2 of plastic insulated single-strand copper core wire, per 100

m weight is. kg;mm2 of plastic insulated single-strand copper core wire, per 100

m weight is 3

kg;mm2 of plastic insulated single-strand copper core wire, per 100

m weight is. kg, 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.

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.

To inspect, you only need to peel off one end of the wire2

cm, and then use a piece of white paper to rub a little 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 shoddy wires may seem to be very thick, but in fact most of them are made of recycled plastic, and over time, the insulation layer will deteriorate and leak.

See**. Due to the low production cost of counterfeit and shoddy wires, traders often sell them under the guise of cheap and high-quality products.

Selling at a low price, making people fooled.

1. Wire length.

The allowable length error of the national standard is within the range, and the difference between the marked length of the non-standard wire and the actual length is at least 15m.

2. Uniformity of insulation and thickness of sheath.

If the thickness is uniform, it is the national standard, and if the thickness is uneven, the eccentricity is large, it is non-standard.

3. The color and gloss of the conductor copper core.

The copper core of the national standard is purple-red and has good gloss, while the copper core of the non-standard is yellow with a black surface and a dull gloss.

4. The purity and resistance of the conductor copper wire.

The national standard is pure copper and has low resistance, while non-standard copper contains many impurities, large resistance and high power consumption.

The national standard wire is the wire that is produced in full accordance with the national standard. Generally, household and common wires are in line with the standard specifications and performance, and the national standard stipulates five common specifications and performance.

1. The appearance is standard, there must be a certification mark, manufacturer, wire diameter, etc. on the wire, and the ground wire is insulated with a yellow-green layer.

2. Mechanical strength.

3. The insulation (generally greater than 100m) and voltage strength of the sheath (1500V below 500V).

4. Line resistance (no greater than a certain resistance under a certain wire diameter, conductivity and length).

5. Under the high temperature impact of 150 degrees, the wire shall not crack at the low temperature of -30 degrees.

The model of China's wire and cable is composed of 7 groups of letters and numbers.

The first group consists of one to two letter groups, indicating the type and purpose of the wire. Such as: A-installation wire, B-cloth wire, C-marine cable, K-control cable, N-agricultural cable, R-flexible wire, U-mining cable, Y-mobile cable, JK-insulated overhead cable, M-coal mine, ZR-flame retardant, NH-fire-resistant, ZA-A flame retardant, ZB-B flame retardant, ZC-C flame retardant, WD-low smoke halogen-free type.

The second group is a letter that indicates the material of the conductor material. Such as: T-copper core wire (omitted most of the time), L-aluminum core wire.

The third group is a letter that represents the insulation layer, such as: V-PVC plastic, YJ-XLPE insulation, X-eraser, Y-polyethylene, F-PTFE.

The fourth group is a letter that represents the sheath, such as: V-PVC sheath, Y-polyethylene material, N-nylon sheath, P-copper wire braided shield, P2-copper tape shield, L-cotton yarn braided wax gram, Q-lead package.

The fifth group is a letter that indicates characteristics, such as: B-Flat, R-Soft, C-Heavy, Q-Light, G-High-Voltage, H-For Welders, S-Twisted Pair.

Group 6 is a number that indicates the armor layer, (under the small foot mark). 2-Double steel strip, 3-Fine round steel wire -Coarse round steel wire.

The seventh group is one, which represents the foreign He bucket sheath, (under the small foot mark), such as: 0- means no sheath, 1-fiber layer, 2-PVC cover.

We can say that wires are indispensable materials when decorating, but there are so many wire brands on the market that it is difficult for buyers to choose. Today, I would like to introduce to you what are the national standard wire brands? What are the key points of buying national standard wires? Let's find out!

1. What are the national standard wire brands?

1. Baosheng. The brand belongs to the old brand, from the establishment to the present is the use of high-tech for the production of wires, and the wire is very difficult to dismantle a lot, belongs to a very large scale of a domestic enterprise company, but also a more powerful wire manufacturing enterprises, has also been rated as a landmark brand in China's wire and cable industry.

2. Shenghua. The brand belongs to the leading brand in China, it not only has exquisite production technology in production, but also has a very good pre-sale, in-sale and after-sales service. Moreover, the wire it produces is also very high in terms of safety factor, and the quality is also guaranteed to a certain extent, so it is also the preferred material for many home decoration.

3. Pandas. The brand was established in 1947, and the brand produces a number of various plastic insulated wires professional enterprises, its production of wires is very high-quality in terms of quality and after-sales, and its influence on the market is also relatively large, recognized by the decoration family.

Second, what are the key points of buying national standard wires.

1. When we select wires, we must observe the appearance layer of wires, usually the insulation sheath layer of qualified products is very soft, as well as toughness and a certain degree of elasticity, and the surface layer of the wire is tight, smooth and no roughness. If the plastic is wrapped around the wire, it is easy to be peeled off, so that the plastic is not strong enough.

2. Also look at the cross-section of the wire, the surface layer of the copper core or aluminum jujube core of a qualified commodity has a certain metallic luster, and the surface of the blackened copper or the surface will be whitish aluminum, in this case, it means that it has been oxidized.

3. When selecting wires, we should also pay more attention to whether the wires are qualified, so we must check the quality certificate when buying wires. A qualified wire is also very good in quality, in the factory must be strictly required to pass the inspection before the market can be sold, the selection of wire must go to the local regular shopping mall or store to buy.

1. Their appearance is different, the national standard cable is certified by the system, and the non-national standard cable does not have a system certification, if there is a trademark specification and voltage on the wire, then it means that this is the national standard. If not, then it means that it is a non-national standard.

2. The degree of willfulness between them is also different, the national standard cable feels very soft when repeatedly bent by hand, and the non-national standard cable is not as good as the national standard cable in terms of softness.

3. There is also a difference in the weight between them, the national standard electric potato cable is generally within the specified weight range, and the poor quality cable is the weight of the non-national standard cable is far less than the national standard cable, so the length between them is also different, if the two cables are weighed in the hand, the weight of the national standard cable will be larger.

4. The material between them is also different, the national standard cable is generally purple red, it is shiny, the feel is softer than the national standard cable rubbed slightly, it is very likely that there will be a black substance out, indicating that the impurities of the copper core are more, and it is easy to produce leakage after a long time.

5. There is also a difference between them, the cost of the national standard cable is relatively high, and the cost of the non-national standard cable is very low, so its ** tremor is not high.

The above is that I introduced to you the difference between national standard cable and non-national standard cable, I believe you have a certain understanding of this, I hope to help you.