Finding the size of the cable? What are the cable sizes?

At present, the common wire specifications on the market are divided into square millimeters, square millimeters, 4 square millimeters, 6 square millimeters, 10 square millimeters, etc., according to the cross-sectional area of the conductor.

Lighting fixtures and other places with low electrical power are suitable for using wires in square millimeters;

There are circuit branches in the switch socket, which is suitable for the selection of wires in square millimeters;

Air conditioners, refrigerators, water heaters and other high-power appliances. The power of the main line of the circuit is relatively large, and it is best to use wires of 4 square millimeters and above;

The main line or the ** air-conditioning line has a large current carrying capacity, and the wire that is generally too thin can not bear it, so it is best to choose a wire of 6 square millimeters and above.

The size of the power cable is 1 square millimeter.

square mm, square mm, 4 square mm, 6 square mm, 10 square mm, 16 square mm, 25 square mm, 35 square mm, 50 square mm, 70 square mm, 95 square mm, 150 square mm, 185 square mm, 240 square mm, 300 square mm, 400 square mm, 500 square millimeter, 630 square millimeter, 800 square millimeter, 1000 square millimeter, 1200 square millimeter, 1400 mm², 1600 mm², 2500 mm².

A brief description of the cable:

1. Cable [electric cable; Power Cable] is usually a rope-like cable made up of several or groups of wires (at least two in each group), each of which is insulated from each other and often twisted around a center, with a highly insulating covering over the entire outskirt.

2. Wires and cables refer to materials used for electricity, communication and related transmission purposes. There is no strict boundary between "wire" and "cable".

3. Usually the products with few 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.

Lighting wires in your home.

Lighting wires are squared. Generally, the power of the home lighting load is not too large, and there are almost 6-8 lamps in the dining room, living room, main and secondary bedrooms, balconies, kitchens, and bathrooms, which are controlled within 1500 watts, and the square national standard copper wire is enough.

Wire for water heater socket.

The water heater is relatively large in household appliances, it is recommended to use 4 square wires, 4 square copper core wires can allow a maximum load of 7000-8000 watts, and the limit value is 8000 watts. Therefore, even if the water heater or bath bomb is turned on at the same time, there will be no major problems, and even if it is overloaded, it will only trip.

Wires for air conditioning outlets.

The air conditioner is also a high-power electrical appliance at home, so the socket is also a 4 square wire, of course, you can also use 6 square wires, but the construction difficulty of doing so will increase, and the area occupied by the socket bottom box will also become larger, and the wiring will become a very troublesome thing.

Wires for ordinary outlets.

The ordinary socket at home can use square wires, and the general load is controlled within 2500 watts. However, if you often use high-power electrical appliances, it is still recommended that you choose a 4 square wire.

Wires for kitchen outlets.

It is recommended to use 4 square wires for kitchen sockets, on the one hand, because there are many appliances in the kitchen, and on the other hand, because of the high frequency of use. Some kitchens are a square line to the top, and then arrange the socket below, with a square wire to connect the fire, all the sockets are connected from the square line separately, therefore, this practice is no problem.

The model number of the common cable is VV or VLV PVC insulated PVC. The common specification is 3 times 10 plus 1 times 1.

Multiply by 16 plus 1 by multiply.

Multiply by 25 plus 1 times 165 times 35 plus 1 times 25 and so on. The role of the cable is to transmit and distribute electric energy, and it is frequently used in underground networks, power stations, power supply for industrial and mining enterprises, and land and water transmission lines.

We often use cables in our daily life, so what are the specifications and models of cables?

1. What are the specifications and models of cables?

The model number of the common cable is VV or VLV PVC insulated PVC.

Common specifications are 3 times 10 plus 1 times 1 times 16 times 1 times 25 times 1 times 165 times 35 times 1 times 25 times 25 times 25 and so on. The role of the cable is to transmit and distribute electric energy, and it is frequently used in underground networks, power stations, power supply for industrial and mining enterprises, and land and water transmission lines.

Specification of cable: 1 square millimeter, specification is 1; square millimeters, the specification is 1; square millimeters, the specification is 1; 4 square millimeters, the specification is 1; 6 square millimeters, the specification is 1; 10 square millimeters, the specification is 7 sticks. There are many varieties and specifications of cables, and there are thousands of specifications.

As the main carrier of power transmission, wires and cables are widely used in electrical equipment, lighting lines, household appliances, etc., and their quality directly affects the quality of the project and the safety of consumers' lives and property. There are many varieties of wires on the market, and it is necessary to use the right wire according to your own electricity load. The appearance of a good wire product should be smooth and round, and the color is uniform, so we should disassemble and check the wire when purchasing to see if the appearance is uniform.

The conductor of the wire should be shiny, and the DC resistance and conductor structure size should meet the requirements of the national standard. The wire and cable products that meet the requirements of the national standard, whether it is an aluminum conductor or a copper conductor, are relatively bright and oil-free, so the DC resistance of the conductor is fully in line with the national standard, with good conductivity and high safety.

The specifications of power cables are: 1 square millimeter, square millimeter, square millimeter, 4 square millimeters, 6 square millimeters, 10 square millimeters, 16 square millimeters, 25 square millimeters, 35 square millimeters, 50 square millimeters, 70 square millimeters, 95 square millimeters, 150 square millimeters, 185 square millimeters, 240 square millimeters, 300 square millimeters, 400 square millimeters, 500 square millimeters, 630 square millimeters, 800 square millimeters, 1000 mm², 1200 mm², 1400 mm², 1600 mm², 2500 mm².

A brief description of the cable:

1. Cable [electric cable; Power cable] is usually a rope-like cable made of several or groups of wires [at least two finch roots in each group], each of which is insulated from each other and often twisted around a center, with a highly insulated cover over the entire outskirt.

2. Wires and cables refer to materials used for electricity, communication and related transmission purposes. There is no strict boundary between "wire" and "cable".

3. The products with a small number of cores, small product diameter and simple structure are often 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.

millimeter to millimeter.

Cable specification is the meaning of the representation of the number of cores and cross-sectional dimensions of wires and cables. A normal square cable, which has a diameter of millimeters, is generally used in the arrangement of electric light wires. The square is millimeters, which is generally used for the use of socket seats or small household appliances. Triumph Fortune.

4 square is a millimeter, which is generally used in high-power electrical appliances, such as air conditioners, water heaters, etc. The 6 square is millimeters, and the main circuit is generally used as a home installation.

Cable purchase skills:

Check the length first, the normal wire packaging will be marked, but in order to avoid the business cutting corners, it is necessary to open the inspection beam to ensure that the error is not large.

Check the length of the wire diameter and copper wire diameter.

To check the quality of the copper wire, we need to ensure that the copper wire is copper, and the color can not be yellow, otherwise it means that it is brass and the texture of brass is very hard, we must be careful when purchasing, so as to avoid buying fakes.

Check whether the wire is accompanied by the 3C certification mark, if there is, it means that the wire is produced by a regular business, if not, it is not recommended to buy, because there is no guarantee. <>

The specifications and dimensions of the cable table are as follows:

1. The size of the wire is calculated by the cross-sectional area of the wire, and the unit is square millimeters, such as 1 square millimeter, and the number is 1mm.

2. The cross-sectional area of the wire is square millimeters, divided into squares, etc.

Millimeters squared) is generally called a wire, and more than 10 (square) is called a cable.

4. When buying wires, it is generally considered to be less than 10 square meters, and it is generally considered to be more than 10 square meters to buy cables.

Most of the cables above the square are composed of multiple copper wires twisted into one.

A wire composed of copper wire below the square is called a soft wire, also called a stranded wire, and a copper wire with only one wire is called a hard wire, and the shed is also called a single strand.

7. The large cross-sectional area of the extended data conductor (more than 6 square millimeters) is called large wire, the smaller one (less than or equal to 6 square millimeters) is called small wire, and the insulated wire is also called cloth wire.

8. Wires and cables mainly include wires, magnet wires, insulated wires for electrical appliances, power cables, communication cables and optical cables.

9. Cables include power cables, control cables, compensation cables, shielded cables, high-temperature cables, computer cables, signal cables, coaxial cables, fire-resistant cables, marine cables, etc.

10. They are composed of multi-strand wires, which are used to connect circuits, electrical appliances, etc.

The role of the silver companion of the cable:

1. Cable refers to the wire with multiple mutually insulating cores in the insulating sheath, in addition to having good conductivity, sufficient dielectric strength between the cores, and not easy to occur short circuit faults, the insulating sheath also has certain tensile resistance, compression resistance and wear resistance.

2. Cables can be divided into general cables, power cables and communication cables according to their uses. Cables for electrical equipment are used as mobile power cords for various electrical equipment, power tools, instruments and daily electrical appliances; Power cables are used in the trunk lines of transmission and distribution networks; Communication cables are used as wired communication (such as **, telegraph, fax, television broadcasting) lines, and are divided into symmetrical communication cables and coaxial communication cables according to the type of structure. <>

Cables and wires are usually composed of three parts: core, insulating cover and protective sheath, in order to apply to different use scenarios, wires and cables can be specifically divided into the following specifications and models:

1. BV: copper core PVC insulated cable wire.

2. BVR: copper core PVC insulated flexible cable wire.

3. BVV: copper core PVC insulated PVC sheathed round cable wire.

4. BVVB: copper core PVC insulated PVC sheathed flat cable wire.

5. BV-105: copper core heat-resistant 105 degree PVC insulated wire.

6. BV-ZR: copper core flame retardant PVC insulated wire.

7. BVR-ZR: copper core flame retardant PVC insulated flexible wire.

8. BVV-ZR: copper core flame retardant PVC insulated PVC sheathed round cable.

Commonly used**. Usage** - not marked as power cable, K- (control cable), P- (signal cable).

Conductor material ** - not marked as copper (can also be marked as Cu), L- (aluminum).

Inner sheath **-Q- (lead packing), L- (aluminum cladding), H- (rubber sheath), V- (PVC sheath), inner sheath is generally not identified.

Outer sheath town brother **-V- (PVC), Y- (polyethylene power cable).

Defeat Brigade Leakage **-D- (not trickle), P- (dry insulation).

Special products **-TH- (humid tropics), TA- (dry tropics), ZR- (flame retardant), NH (fire resistant), DZ- (low smoke halogen-free, enterprise standard).