Wires WDG: Specifications, Purpose, Application. VG Cable - Specifications and Classification Connection 5 Live Cable

Current used by almost all electrical work.

Technical characteristics depend on its type, labeling, the number of included in it lived, cross sections and other parameters.

Wires of the VG according to GOST 16442-80

Constructive features

Wires VG are divided by the number of lived. Their 5 species are one - five-housing.

1 and 2 category is used to lay the alternating current single-phase network. The wire is single-core parallel in two rows, two-core - in one row. If one lived is attached to the phase, the other is to 0. In this case, the zero wire is most often blue or blue.

The four- and five-intensive cable are installed in three-phase networks. In the first case, 3 veins are phases, and the fourth is zero. In another - added even eating grounds.

Section

The cross section of all conductive livers varies in the range of 1.5 - 50 mm². If you fold them, the cross-section of the wire itself will be.

• In a single-core cable, the VVG section of the core varies from 1.5 to 240 mm².
• In two-four-core wire maximum size 95 mm².
• In the pentoline comes up to 50 mm².

With an increase in the cross section of the main livelies, the cross section of the ground and zero section decreases.

All these parameters are indicated in the labeling of the power wire. Let us give an example.

The 2x WG cable has the following decoding: 4 - four-core wire. The number "10" indicates the cross section in mm².

The most common VVG models are considered to be those in which cores having a different section - four- or five-housing.

Design

Modern wires of the WDG are of different sizes, such as material.

Conductors consist of 3 main components: conductors, insulation, protective shell. The composition of individual wires depends on the purpose. As a rule, it is most often used by the force aluminum Wire of the VG. The design and material depends on 3 main factors:

1. Operating voltage (network load) and power on which the thickness of the insulation is determined.
2. The maximum electric current and resistivity, on which the size of the conductive conductors and the cross section of the conductor depends.
3. Conditions ambient (temperatures, gaskets underground or on it, humidity, chemical composition Environment or amount of sunlight, etc), which determine the composition and shape of the outer shell of the wire.

In the power venture, wires are used stranded aluminum or copper conductors, but in small power wires There may be solid veins.

If the Wire of the JD is considered in the context, you can see that there are certain differences between models withstanding the power of 6-10 kV and 0.66-1.0 kV. They are based on, as a rule, all the same: insulation of copper wires of different colors (the white phase, the ground is yellow-green, zero blue).

• Metal and electrically conductive screen.
• Interlayer.
• Shell.

The outer diameter of the cable itself depends on the number of insulation layers and the number of those present.

Where does the WEG power wire apply?

The power Copper Cable of the WEG is used for stationary installation in power grids, where voltage up to 1000 W and frequency of 50 Hz. Wire of the VVG is paved wiring along the highway. If the installation is carried out in the open air, it will take additional protection against direct sinks of sunlight (cable tray, PND tube, etc.), because the ultraviolet service life of the cable VG significantly reduces. When laying in Earth, additional protection measures are needed from mechanical damage to the shell. It should be remembered that in buildings and structures, according to the requirements of Fire Safety, the WDG is prohibited.

Where does the WEGNG power wire apply?

The non-combustible copper cable WGN is used for stationary gasket in power grids, the voltage of which up to 1000 W and the frequency of 50 Hz.
WEGNG cable can be mounted wiring in buildings and structures and outdoors. Wiring should be protected from the effect of direct sun rays, because ultraviolet can reduce the service life. When laying in Earth, it is necessary to apply additional means of preventing various mechanical damage.

Where is the power wire of the VVGNG-LS?

The NG-LS UG-LS cable is used for stationary laying in a variable voltage network to 1000 W and a frequency of 50 Hz. Mounted in the power supply network in different buildings and facilities, is used for group laying in cable structures, boxes and trays. According to new fire safety requirements, the Wire of VVGNG-LS is used in socially significant objects (kindergartens, schools, etc.) is prohibited.

Operating conditions

Manufacturers identify certain conditions under which the Wednesses of the WEG can be laid and operated.

• Installation can be made at air temperature not lower than -15 C.
• Exploited in the limit -50 C +50 C.
• In non-standard cases, temperature regime can be raised to +70 C., with emergencies (short-term) even up to +80 C.
• Permissible humidity - no more than 98%.
• Warranty period - up to 30 years. As practice has shown, this period may be doubled during proper operation.
• Installation can be carried out by air. If the laying height exceeds 4300 m above sea level, special overpass will have to use.
• In production, where there is an increased corrosion activity, the installation must be performed in special boxes.

Conclusion

Select the Wire of the VG, the characteristics of which are described above, follows from the power of consumption and the strength of the current passing through it. So, a 2 × 1.5 cable can be used for lighting, for 3x2.5 (with grounding). To connect household appliances, a separate line is recommended. For example, for air conditioner WD 4x2.5 or 3 × 2.5.

The house is best to bring the five-in-room cable 5 × 10 or 5 × 6.

Wire VG: Price

You can buy a VG pipe in almost any electrical store. Its cost in most cases is quite low. The average price is 8 rubles per meter.

Sale can be carried out wholesale and retail. Manufacturers individually provide discount offers and shipping methods. Before buying, you must check the certificate of conformity and passport. Remember that the choice of quality material directly depends on the availability of such documents.

The article discusses the choice of cable for different options Connecting the load. All examples of applications are focused on the Cable of the WG. When installing electrical wiring, cables 1, 2, 3, 4 and 5 cables can be applied.

Single cable (often called a wire) is usually used:

¾ for jumpers;

¾ in emergency cases, with a breakproof (bump) one of the liveli cable;

¾ for individual connecting grounding;

¾ Possible other reasons.

As for multicore cables, first of all, you need to consider the load connection schemes. In Russia, the three phase of consumer connection scheme applies. Figure schematically shows the connection of the secondary winding of the transformer at the substation ("Star"). From here and all connectivity options (used cable).

Attention. Neutral wire, it is "zero" or "zero" at the substation grounds. Do not configure it with protective grounding.

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In old buildings and structures were used to connect single-phase load - sockets, household equipment, etc. It is used:

¾ to attach switches, single lamps;

¾ for the manufacture of extension cords when there is no protective grounding (in field conditions);

¾ When you want to temporarily connect the load;

¾ can be used in signaling and broadcasting systems, especially with hidden wiring.

Three vein cable VG

The most common type of cable. Among the applications can be distinguished by two main:

¾ Single-phase power supply with protective grounding, the purpose of the veins - phase, zero and protective ground. These include:

• wirout of the network in residential, industrial and administrative buildings (hidden and open wiring);
• cords for connecting all household devices (irons, refrigerators, computers, etc.);
• extension cords, etc.

¾ Connecting three phase power to the load. All three veins are phases, grounding individual for each device. So consumers are connected according to the "Triangle" scheme. These include, for example:

• Tennes (heating elements) Electrocotes:
• asynchronous engines;
• three phase welding transformers.

Used for consumers, which are included according to the "Star" scheme:

¾ Various buildings and structures. The distribution of the phases is performed in the switchboards, and then one-phase wiring (3-wire cable);

¾ Electric motors and other power equipment.

Protective grounding individual for each building or equipment unit.

Five living cable VG

Used for three-phase wiring with zero wire and protective grounding.

Used in buildings and structures when there is one common grounding contour.

Comment

In four and five residential cables, zero lived and the "land" can be of a smaller cross section, since the currents through them are insignificant:

¾ through the ground wire can only be accomplished by emergency short-term currents;

¾ Through the zero wire with good agreement of the phase current is small.

Coloring lived.

The JVG cable, like others, is made with multi-colored cores, while the color is strictly respected only for two lived:

Protective land - yellow-green;

Zero wire - blue.

The rest (phase) wires can have different colors - white, red, green, etc. For example, in the three core cable, the colors of the core may vary from orange to brown. This also applies to the German analogue of the VG - NYM-J cable. Here, the following is important: on the existing cable, the color of the veins should be determined for each phase and comply with it throughout the installation within a particular structure.

It is desirable that the color lives coincides with the color of the tires in the shields:

phase A - yellow, in green, with - red.

Here in principle, and all that today we wanted to tell our reader. If you have any questions left, then you can ask them in the comments below.

The VNG cable (vinyl-vinyl-naked) 5x1.5 is used in an alternating voltage systems for electrical current. Basically, they are operated in upgraded electrical systems to connect to a three-phase network with separate veins under zero working N (blue isolation) and protective PE (yellow-green insulating cover) of the veins.

We are often used by the overall residential PEN, which combines zero and protection. The conductor is used for a single stationary laying, since it does not distribute the flame with this condition.

There are indoors, singly on any cable laying systems, as well as in street conditions. A gasket is allowed in the condition that the mechanical protection of the location of the output to the surface (broach through the pipe).

Applied with alternating voltage of no more than 660 V with a frequency of 50 Hz. The maximum voltage in the three-phase network can be 720 V.

Nominal load on 1 core in the three-phase chain depend on the laying conditions:

• 21 amps with air gasket;
• 28 amps when laying in the ground.

If a single-ace short circuit occurs, the peak current may be 170a.

Exploited in temperature conditions from -50 to + 50 ° C.

Constructive elements of the copper cable VG 5x1.5 for stationary solitary strip

Monolithic conductive residents are manufactured from a copper unclear wire grade 1 in accordance with GOST 22483 from 1977. All five veins have an equal cross section of 1.5 mm 2.

Insulation polyvinyl chloride (PVC) plastic has a thickness of at least 0.6 mm. After twisting, there lived (since the residentials are not tightly adjacent to each other, in the center they are laid out of PVC plastic), they are wrapped with a polyethylene terephtalat (PET) film, which replaces the belt isolation.

The entire design is concluded in the hose PVC shell, which serves to protect against mechanical effects and solar radiation, protects against moisture and dust. The shell thickness is assigned according to GOST 23286-78 and equated with 1.5 mm.

The final calculated outer diameter is equal to 9.9 mm.

See also:

Electric cable channel 220V needed in any private house and apartment. Copper, which is part of the wire, provides current passability. However, before you buy, you need to know which thickness is needed. It is good that on each box now there is an inscription and signs that simplify the choice. What section goes for apartment wiring? Help with the choice of pictures of tables and cable standards. What cable is needed in the apartment and at home, how to choose it? What should be marked for 220 volts? All about cables and their sections in this material.

What is a cable socket

First of all, you need to understand that the cable socket is part of the connector that is manufactured as one with a cable. It can also be attached to a flexible cable to connect it to a power source.

Features:

1. In terms of its structure and the bottom form, the cable socket is the same as stationary.
2. Such sockets are installed in residential and public spaces to output the cable for the desired length.
3. This product consists of a housing with high strength.
4. The housing is made from high-quality plastic, can be black or white.
5. Contacts are made of high elastic phosphorous bronze and a special curtain.
6. The cable socket is running at a temperature of 0 to 50 ° C.

Using a cable outlet, you can connect cables directly to the wiring. It is very convenient and greatly simplifies the installation. Of course, there are certain standards of cable cross section.

Each standard is designed for a specific current, so when connected, it is necessary that the power of the capacities of all devices running from electricity did not exceed this value.

It is taken into account during the design of wiring in the house. When connected, it is important not to confuse the wires and the place where they need to be put, that is, polarity. If this is neglected, then a short circuit is possible. It is important not to confuse zero, phase and grounding.

Features of the five-tier cable

Single-core and two-housing cables are used to lay the AC in one network phase. If a single-core cable is parallel in 2 rows, then a two-housing one. In this case, one vein connects to the phase, and the other to zero, while the zero wire most often has a blue or blue color.

To understand what is a five-pot cable, you need to know that all VG is divided into 5 species by number lived in them:

• Single-core;
• Two-housing;
• Trinket;
• Four-core;
• Pienna.

The cable with 4 and 5 by the veins is installed in three-phase networks. In the first case, 3 veins are phases, and the fourth zero. In another case (when there was 5) another one is a grounding wire. The cross section in all veins conducted, the current is in the range of 1.5 to 50 mm.

If you add them all, then the cable itself will eventually work out.

In a single-core cable, the cross section varies from 1.5 to 240 mm. In a two-core, three-core and four-core wire, the maximum section of the cross section reaches 95 mm². In the pentoline comes up to 50 mm². The more the cross section of the main lived, the less the cross section of grounding and zero lived.

Instruction: How to connect the cable to the outlet

All technical aspects are specified in the labeling of the wire. Figure 1-5 shows the amount of lived, and the following indicator, for example, 1, shows a section in the square in the square. The cable to the outlet is attached most often in low-current lines.

The whole process in this case looks like this:

1. First of all, you need to turn off the machine, that is, de-energize the network. For this, plugs are twisted or automatic switches are turned off on entering.
2. The second step is to check the lack of current using a special tool called multimer. Also, instead, you can use an indicator or voltage pointer.
3. The next step is to dismantle the old outlet. To do this, remove the socket cover, then unscrew the screws of the outlet's paws, and pull it out of the box and turn off all the power wires.
4. Now you need to clean the wire.
5. The cable, which is carried out into the opening of the peasement, must be prepared for connection. That is, remove the external insulation by about 20 cm from the cable. If the cable is laid with single insulation, then you can simply separate its veins from each other by 10 cm.

Now you need to connect the socket, that is, to connect contacts with the feed wire. The bare part of the cable is set in the terminal and gently tighten the screw in this case not to transmit the wire. To connect to it reliable, you need to bend the cable with a ring with a diameter of 5 mm.

If the installation of a socket with a ground is performed, the ground cable is connected to the appropriate terminal.

Before the last step is to install a socket in the box. It is performed after the attachment of all feed cables. The working part is placed smoothly without distortion. All wires need to be hidden and fasten the outlet with paws and screws. The last step is to fasten the lid and check the operation of the socket.