A double socket in one socket box is installed in cases where there is a lot of electrical equipment in a house or apartment, but there are sorely not enough sockets, and there is no way to increase their number. Figure out how to connect double socket, maybe even a person without special training, just stock up on a minimum set of tools and carefully study the installation instructions.

Built-in and overhead structures

Most of the double sockets on the market are built-in. These designs have this name because the product block, together with the contacts, is immersed in the wall (in the installation box - the socket box), and the plastic case almost does not protrude above the plane of the wall.

The main advantage of built-in structures is that the wiring is hidden in the wall, and, accordingly, does not pose a danger to the residents of the house. Therefore, built-in double sockets are used most often, although, at the owner’s request, overhead structures can also be installed, the cable to which is routed along the surface of the walls.

Installation of a double socket in one socket box can be carried out with or without grounding. The grounding design has contacts that connect to electrical networks with grounding. According to current regulations, all heating appliances, complex electrical appliances with microcircuits and water-related equipment must only be operated when grounded. The ground contact directs static electricity to the ground, preventing it from damaging equipment and shocking users.

Installation Hardware Modifications

It is important for a novice master not only to know how to install a double socket, but also to understand what features a design intended for certain conditions should have. Products are:

Open or closed. In closed models, the holes for the plug are hidden behind small curtains that move back when connecting electrical appliances. Such devices are indispensable for homes where there are small children. The curtains only move back when pressed simultaneously. That is, even if you deliberately insert a foreign object into one of the holes, nothing dangerous will happen.
Without grounding and with grounding. Grounding contacts are inserted into the housing of the second type of product; they protect electrical devices and users from currents that may accidentally enter the plastic housing.
For installation in rooms with high level humidity. Such models are marked IP-44 and are equipped with housings that protect devices from moisture.
For outdoor installation. Such designs are marked IP-55. They are equipped with high-strength housings and are protected from moisture penetration and dust contamination.

If there is a letter marking “A” on the body of the product, this means that the buyer is looking at an American product. The “B” marking indicates the presence of a grounding contact.

How is a double power socket different from a double socket?

Many users mistakenly believe that the double model consists of two independent devices located close to each other, which are connected to each other by cables. However, in fact, such structures are called dual ones. Each part of the dual device is installed in a separate socket box and is supplied with power independently of the other part of the structure.

The connection diagram for a double socket is not much different from the installation diagram for a single device. The only difference is the serial connection of two contact pairs within the installation product. A double product allows you to connect two plugs, but is installed in one socket and has only one block (mounting part).

This design is equipped with one clamp and several distribution strips, due to which the electric current is supplied to both connectors equally, but its level will be distributed depending on the power of the connected devices.

The total load on this type of outlet should be no more than 10-16 A. If you need to connect two powerful electrical appliances to the network at the same time, it is recommended to install a dual design.

Preparatory work before installing the product

Before installing a double socket, you should stock up necessary tools and materials. The technician will need a sharp knife for stripping wires, electrical tape, a flathead and Phillips screwdriver, and pliers.

First of all, you need to define what phase and zero are. How to do this? The easiest way is to study the wire markings. So, the phase wire is painted brown, red, black or White color, the neutral is covered with blue or white-blue insulation, and the ground is always yellow-green.

However, you should not always trust the labeling; it is better to double-check everything, this will avoid unpleasant consequences. To test the wires, the technician will need latex gloves and a tester screwdriver - a regular or electronic screwdriver with an LED detector or light bulb. The screwdriver must be brought to each wire in turn. In phase, the indicator will light up, but in neutral there will be no light signal.

How to connect a double socket and avoid electric shock? It is necessary, first of all, to de-energize the line through the meter; this is the main safety rule. The levers of the machines must be moved to the lower position (the “Off” position). Then the voltage at the installation site of the device is re-checked. If current is still present in the phase, you should turn off all the circuit breakers, not just those that control the cable stretched to the connection point.

When trying to figure out how to connect a double socket, you need to remember that the phase should be on the right and the neutral on the left (or vice versa). A grounding cable must be connected to the top or center terminal. Experts recommend using a wire of the same cross-section as the main wiring. The materials used must also be the same. If the eyeliner is carried out aluminum wire, then when connecting a new device you should also use aluminum.

Basic connection steps

When the preparation is completed, you can begin to carry out the main work. The double socket connection diagram includes several stages:

A place for installation is selected on the wall future design. It is recommended to place it close to the cable running in the wall or distribution electrical box. The base of the future product is outlined with a pencil, and then at the marked place a hole is made with a punch, the size of which is sufficient to accommodate the internal housing (glass) of the electrical outlet.
A hole is made in the glass through which the wires are brought out. Then the glass is fixed in the recess of the wall. To make the fixation more reliable, you can use cement and alabaster or secure the glass with dowels. However, the socket box can be additionally not secured, since modern designs are equipped with special claws that securely fix the glass in its proper place.
The socket is unscrewed using a screwdriver, outer panel separated from the internal mechanism.
The wires located in the socket box should be shortened with pliers to a length of approximately 10 cm. Then each of them should be sharp knife remove the insulation to a length of 0.8-1 cm. It is recommended to bend the edges of the cores upward for ease of further assembly.
The side mounting screws of the mechanism need to be unscrewed slightly to free the holes into which the wires are then placed.
The phase and neutral wires are attached to opposite side terminals of the mechanism, and the grounding is fixed in the central connector. It is strictly forbidden to attach the phase and neutral to the same plate, as this can lead to a short circuit and damage to the wiring.
The mounting screws are tightened, securely fixing the wires in the terminals. Screws must be tightened carefully as applying too much force may damage the mechanism.
The front panel is installed in its proper place and fixed with screws.
When the work is completed, it is imperative to check the operation of the installed mechanism. To check, it is better to use an inexpensive device, such as a table lamp.

Figuring out how to properly connect a double socket is not at all difficult. But if you are still not confident in your abilities, then you should contact a professional electrician.

Modern apartments cannot be imagined without various household appliances. In this regard, situations often arise when the available connection points are simply not enough. This problem can be solved different ways, for example, by adding new sockets. However, this is not always convenient, especially after a recent renovation, so the only solution is a double socket in one socket, installed instead of a standard product.

Double sockets are compact in size, fit into existing wiring, and double the possibilities for connecting electrical appliances. Such sockets work reliably for a long time, provided the right choice and connections.

Main types of double sockets

Any type of electrical outlets, including USB, are designed to connect various devices to the network. The design includes the main or working part with a contact group, and a cover that protects the internal mechanism from external influences.

Often a problem arises due to the inability to connect an additional device due to the lack of free sockets. Therefore, double sockets installed in one socket box are becoming increasingly popular among apartment owners. Almost all models are equipped with contacts for connecting a ground wire.

Connected double sockets are presented as separate devices installed at close distances from each other. However, as practice shows, this option is not aesthetically pleasing and requires additional drilling of the wall for another socket box.

A monoblock made in the form of a double socket is considered more convenient. It can be installed in an old place with the obligatory replacement of the existing mounting box and does not cause significant damage interior decoration. In such monoblocks the power electric current is divided into two parts, and this is their disadvantage, especially noticeable when simultaneously connecting household appliances.

Depending on the modification, monoblocks with double sockets are divided into the following types:

Closed and open. IN closed version The holes for the plug are protected by curtains. Such sockets are used in rooms where small children may be present. To activate the curtains, you need to press them simultaneously. Therefore, if a child wants to put some object into the hole, nothing bad will happen. Option 2 is standard design with open contacts.
or without it. In the first case, the sockets are equipped with contacts for connecting the ground wire. Thus, additional protection against current leakage to the device body is provided.
Sockets with additional protection from moisture and can be installed outdoors. Waterproof devices have IP44, and those intended for outdoor use have IP55.

Products may be additionally marked. For example, letter designation A indicates a US made dual socket, B indicates a ground pin.

Features of installation and operation

Many people mistakenly believe that double monoblocks have the same properties as dual models located in close proximity to each other. As a rule, two separate devices are used for this, connected using one cable. Modern single sockets are considered more advanced than older designs, capable of withstanding no more than 10 A. New designs are already designed for 16 A.

However, two separate sockets have nothing in common with an all-in-one unit equipped with a common terminal and several distribution strips. This ensures an equal supply of electric current to each point, but during operation its level is distributed unevenly, in accordance with the power of each connected device. When deciding to replace an old socket with a new monoblock, you need to take into account its parameters, specifications, features of installation and further operation.

Most modern sockets This type has the ability to be programmed. A timer is installed on them, ensuring that the device turns on and off independently at predetermined periods of time. For the manufacture of cases, unbreakable heat-resistant plastic is used, and appearance and decor are provided by all kinds of color inserts.

If planned self installation, then it is recommended to use the most simple options, without technical frills. As a last resort, you can use devices with spring-loaded plug ejectors when removing them from their sockets. It is best to install products from Schneider Electric, Legrand, ABB and other well-known manufacturers.

For a double socket, a common socket box is provided, equipped with two terminal blocks and a mounting part for wiring. The use of jumpers is possible if you do not plan to connect too powerful devices. It is recommended to plug in high-power equipment into two sockets connected in parallel with a tap at each point.

The wire used for connection must match the parameters of the main cable. If the cable is aluminum, then the jumpers are made of the same material.

Materials and tools

Before starting work, you should stock up on everything necessary materials, components and tools.

For installation you will need:

A hammer drill or electric impact drill for constructing a seat where the socket box will be installed.
Jumper cable.
. Necessary to determine the phase and neutral wires.
A socket box, preferably Legrand, made of durable fireproof plastic or metal.
Multimeter. Needed for measuring voltage in sections of the electrical circuit where connections are planned.
Monoblock, made in the form of a double socket.
Screwdrivers with a Phillips or flat blade, in accordance with the screws used.
Self-tapping screws or other suitable fasteners used when installing the socket in the installation box.
Spicy stationery knife, with the help of which the insulation of conductors is stripped.
Electrical tape to protect connections and exposed parts.
Corrugated tube. Its use is not necessary, but is desirable to provide additional electrical safety.

Preparatory work

After choosing the connection diagram and installation location, you will need to perform a few more mandatory steps. In most cases, monoblocks are installed in place of the old device. For this purpose, you will need to dismantle the existing single socket and installation box.

Before starting dismantling, you need to turn off the power to the apartment using circuit breakers. After this, the socket can be removed. This procedure is easy: the conductors are disconnected from the terminals and the tabs securing the device are unscrewed. The new socket is also disassembled into its main structural elements.

If you plan to install a double socket in one socket box in a new location, you need to drill a new hole in the wall. To do this, a crown is installed on the hammer drill. Its diameter should be slightly larger than the socket box. Drilling of concrete is carried out in impact mode, brick and drywall - in normal mode. The hole should be so deep that the socket box is flush with the surface of the wall. The remaining material from the middle is carefully cleaned out with a hammer and chisel so as not to damage the connected wire.

Next, all cables are inserted into the socket box through the mounting holes. The installation box can then be inserted into seat. Expensive products are attached using side holders, which are included in the kit or purchased separately. Simpler models are secured with screws.

Additional fixation is provided by alabaster, which is placed in the niche before installing the box. At the same time, the product is leveled using building level. Excess solution is removed with a spatula or knife. After complete drying, you can begin installing the socket.

Wiring and connection

Before starting the connection, it is necessary to remove the insulation from the cable cores. This operation is performed with a sharp knife. The length of the wire should not be too long, usually it is no more than 12 cm. The wires themselves are stripped of insulation by about 1 cm. If the wires are too short, they lengthen.

Until the installation of a double socket has begun, it is determined by accessory. The phase conductor is painted brown or red, less often its color is black or white. The neutral wire is insulated with blue or white-blue insulation. The grounding conductor is always painted in the traditional yellow-green color.

However, sometimes the color gamut is off, so it is recommended to take measurements. To do this, use an indicator screwdriver, which touches the exposed wires one by one. On the phase wire the light signal lights up, but on the zero wire there will be no such signal.

Before installation of a double socket begins, the room must be de-energized using a circuit breaker. If it is not possible to turn off only one room, the entire apartment is completely de-energized. At the point where the wire exits where the double socket will be connected, you need to check again for the presence or absence of voltage.

The wires are twisted together directly inside the socket box. The bare ends are connected by soldering or using a special brass contact. In the second case, subsequent operation of the outlet becomes safer.

Wiring and connection of wires to a socket equipped with grounding is carried out according to established rules. The right terminals are allocated for the phase wire, and the left terminals for the neutral. The grounding cable is connected to the top and center terminals of the socket. The central terminal has antennae, most often protruding beyond the body. The grounding contact is fastened according to the same scheme that is used for phase and zero.

It is prohibited to attach the phase and neutral wires to a common plate, as this will lead to a short circuit and failure of the entire electrical wiring.

Creating a block of two single sockets

In some cases, the use of double sockets in a monoblock is not always suitable for convenient use of plugs manufactured according to European standards. To turn them on normally, they must be turned over, which is not always convenient or aesthetically pleasing. In this regard, the number of connection points can be increased by installing a block that includes two single sockets that need to be doubled.

The installation kit consists of two identical sockets and identical socket boxes, suitable in size. One double socket box can be used. In addition, you will need a common overhead frame. Using this method it is possible to install not only two, but also three sockets.

First, using a crown, holes are drilled in the wall for installing socket boxes. If there is no crown, a carbide drill is used, with which holes are drilled in a circle, and the excess is then removed with a chisel and hammer.

After the socket boxes are installed and fixed, it is necessary to cut the cable. Typically, the VVGng brand is used with a cross-section of 2.5 square meters. mm. Before connecting, you must disconnect the power cable.

Unlike the monoblock, two separate Legrand sockets are connected differently. Since the PUE prohibits the connection of a grounding wire with a loop, this method will only be used in relation to the phase and neutral conductors. Grounding will be connected using a separate line. For this purpose, a required quantity branches. The connection points are insulated or with electrical tape.

Next, you can connect the double socket itself. To the first device, two phase wires are connected to one of the terminals. One comes from the power cable, the second goes to the second outlet. The neutral wire is connected in the same way, only to a different terminal. At the end, separate lines are connected to each socket with its own grounding wire, two in total. The sockets are then secured in mounting boxes, and a common overhead frame is placed on top of them.

For your attention detailed step by step photo instructions - how to connect a double (double) socket.

A double or dual socket is a monoblock consisting of two plug connectors for connecting plugs of electrical appliances, which is installed in one seat (in one) and requires connection standard set wires - phase, working zero and ground (protective zero).

Double sockets are used most often in cases where a single socket is no longer enough to connect several consumers, and for some reason it is not possible to add another socket. You need to use such sockets with extreme caution, monitor the power of the devices connected to it so that their total current does not exceed 10A-16A (depending on the characteristics of the specific model of the dual socket).

Connecting a double socket Let's look at the mechanisms of the Sedna model as an example.

Let's start installation:

1. Turn off the electricity! To do this, in the electrical panel, it is necessary to move the circuit breaker levers to the “off” state, usually this is the position in which the lever is pointing down. Which machine needs to be turned off if they are not signed is determined empirically by turning them off one by one and checking, for example indicator screwdriver, presence of voltage in the socket wiring. As a last resort, turn everything off. But then be sure to make sure that there is no electric current in the installation location!

2. We disassemble the socket; to do this, unscrew the mounting screws using a screwdriver, as shown in the image below. As a result of this, we separate the front panel from the double socket mechanism.

3. Using pliers or side cutters, shorten the wires in the socket box so that their length is approximately 10cm. Then we remove 8-10mm of insulation from the ends, and, for ease of connection, we bend the wires as shown below.

4. Place the wires into the screw terminals of the dual socket mechanism, the location of which is indicated in the image below. We place the phase wire (we have brown) and the working zero (we have blue) in different outer terminals, and the protective zero - ground (we have yellow-green) in the central one. And use a screwdriver to tighten the screws.

How to determine which of the wires is phase, zero, and which is grounding yourself, our detailed instructions - .

5. Having leveled the double socket mechanism, we fix it in the socket box, using the mounting screws located on the sides (see figure below).

Installing a double socket is often chosen for financial reasons - it is much cheaper than buying several single sockets.

Double outlets install more firmly into the wall and can be more aesthetically pleasing than single outlets mounted here and there.

Important! The use of double sockets is only possible if the certain rules: the total current, when connecting any devices, should not exceed 10 or 16 Amperes.

Dual Socket Installation Tools

To install a double socket you will need the following set of tools:

A screwdriver that matches the screws that secure the socket

Screwdriver coated with dielectric

Socket box

Cable (if you are installing an outlet and not replacing it)

Self-tapping screws
Multimeter
Hammer (also - if you need to install the socket in a new location)

Before you start connecting

Before installing a double socket, it is necessary to carry out a number of preparatory work:

Select installation location

Lay the cable

Install socket boxes

Select suitable sockets

Installation process

The first thing to do is to protect yourself by turning off the power to the outlet.

But even after turning off all the circuit breakers in the electrical panel, you need to make sure that there is no voltage in the outlet. To do this, you can use a multimeter.

Now you can start disassembling the socket. To do this, tighten the mounting screws and remove the cover.

The socket mechanism will open, with which you have to work:

Now you need to use a knife to expose the wires in the socket box by 10 mm.

Here they are in front of us:

Connecting a double socket

IN in this case two sockets will be connected to one wiring line, so for the first socket you will need 6 wires, and for the second a cable of 3 main wires will be laid.

The connection occurs according to this scheme:

That is, the first socket will receive voltage and transmit it through a loop to the second, parallel socket.

When connecting wires, you need to focus on the color marking; usually the black wire is the phase, the blue wire is zero, and the yellow-green wire is ground. Phase and neutral must be connected to the outer terminals, and ground to the central one.

You can determine phase, zero and grounding using color coding, adopted according to the standard:

You can also use an indicator screwdriver.

It is very important to connect the wires to the outlet terminals correctly.

The figure shows that the power wires must be connected to different terminals. Otherwise there will be short circuit and the wiring will burn out.

It is also necessary that when connecting the second wire to the main terminal, the material of the connected wires is the same, so that the process of metal oxidation does not begin.

Important! Complete electrical safety is ensured if the grounding wire is connected to the sockets using a branch wire, that is, it remains unbroken.

If everything is correct, then you can tighten the screws.

Now you can proceed to securing the socket. You should align the mechanism and securely secure it in the “glass”, using the mounting screws and tightening them firmly on the sides of the socket.

Advice! To align the socket and install it correctly decorative overlay, you need to use a guide, a marker and a pencil, draw an even strip and align yourself with it when securing the socket.

Very difficult to meet electrical wiring, which is located in an apartment without sockets. It is impossible to connect electrical appliances without a high-quality outlet in the apartment.

IN modern world the current load is greatly increased. It is important to correctly parallel connect sockets. This is one of the ways to connect sockets.

Parallel connection of sockets is the safest. The type of socket is of great importance. Today, sockets with an engraver are becoming more and more common. It is capable of automatically restoring contact. You can make a parallel connection of sockets yourself.

First of all, you need to remember that when connecting the necessary wires directly to the contacts, be sure to curl the end of the wire. This must be done in the shape of a ring in order to create a sufficient area for contact.

This will serve as a kind of guarantee for correct connection Power consumers. parallel connection of sockets is very often used in everyday life.

It happens that one functional outlet in a room is not enough, and then a decision is made to install another one, which will help relieve the load on the first one. A parallel connection is ideal for this case. You should not pull new wires from the existing electrical unit. Everything can be made much simpler.

Parallel connection of sockets should be done very carefully. In this case there are some peculiarities. First of all, the ends of the new wire are connected in parallel, hence the name. The connection occurs precisely to the wires that fit into the first socket.

This is very important nuance. To make it easier for you to understand, we will explain the entire connection mechanism in more detail. You need to connect "phase" to "phase", and in turn, "zero" - to "zero". We recommend that you connect the phase wire to the socket of the socket, which is located on the right.

When connecting sockets in parallel, it is very important to follow safety precautions. Don't lose sight of the small details. Please note that when connecting a parallel socket, it is important to pay attention to the material of the wires.

It is necessary that the material of all used dips be identical. This is very important point. Do not connect wires made of copper to aluminum wires. In the event that the connection of wires from various materials cannot be avoided, it is recommended to tin them.

Parallel connection of two sockets

Parallel connection two sockets are used if there are electrical sockets one group. Parallel connection of two outlets can be done in several ways. You can connect the wires in parallel.

The wires must be connected in distribution boxes. You can also go the other way and connect the outlet using a shelf.

The second option is worth choosing if you want to connect sockets that are very close to each other. Before installing sockets, carry out several necessary operations. To begin, mount the sub-socket type boxes and lay the wire to the distribution panel.

Parallel and series connection of sockets

The sockets can be connected in parallel or in series. Parallel and series connection of sockets should be carried out in different cases. Electricians do not recommend connecting sockets in series.

But this is a controversial issue. First, you need to figure out what the difference is between these two methods. It’s worth starting with the fact that all sockets that are in the same group have an identical connection diagram. It's called parallel.

The question is that parallel connection can be carried out by several different ways. You can connect sockets by strapping them into boxes, including twisting, soldering and terminals, or you can connect them on terminals without using the boxes.

The last method is called a daisy chain connection.

To make it easier for you to decide which connection of sockets to choose - parallel or serial, we suggest conducting a detailed comparison of these two methods. As for connecting with a cable, this method can help save on material. This way, you will have to do less work and use fewer resources.

But in this case there is a risk, because today it is not allowed to break the PE conductor. This is stated in generally accepted norms.

These rules can be circumvented only if you are replacing wiring in own apartment or at home. You do not need to put the listed objects into operation, and, therefore, no one will check them. Which method to choose depends only on you, but we do not recommend that you once again risk your safety and the safety of your loved ones.

You can make a daisy chain connection and still avoid violating safety rules. To do this, you just need to leave the current-carrying wires unbroken, namely the phase and neutral wires. This will allow you to reduce the load on the main terminals of the first outlet.

If you carry out the above procedure correctly, this will allow you to keep the PE conductor intact, and thus you will not violate generally accepted safety rules.

How to properly connect a double socket without ground. How to install a socket in a socket box - rules and misconceptions