Connection diagram of the two-button switch: how best to connect

To optimize the process of controlling lighting devices in one or even in two rooms, you can not use two different devices, but install one switch with two keys.

A wiring diagram of a two-button switch that demonstrates the sequence will help you to carry out your plans. connections of electromechanical devices and artificial light sources with their interconnections by wires.

The article provides working diagrams of the switch, lists tips for distributing wires, and also describes step-by-step instructions on installing a double switch. The information presented will be a great help to a home master who plans to complete all the work on his own.

The content of the article:

  • Why choose double-button switches
  • Connection diagrams of double models
  • Step-by-step installation guide for DV
    • Installation of the protective device in the switchboard
    • Wiring options: hidden and outdoor
    • Wire connection in junction box
    • Connection and installation of the switch
  • Compliance with safety regulations
  • Conclusions and useful video on the topic

Why choose double-button switches

There are two popular circuit solutions that have been successfully used for a long time and successfully when equipping a system of electrical equipment for private houses and apartments.

Option number 1. Installing the Far East (two-button switch) in the bathroom area, if the toilet and bathroom are separated by a wall. Thus, one key controls the light in the toilet, the second - in the bathroom.

Today, this option remains relevant and is actively used in typical housing, where the wiring diagram has not changed fundamentally.

However, to expand management capabilities instead of the two-key model, sometimes set the three-button switch, if the bathroom is supposed to control not one, but two lamps or groups of lamps.

Socket block with two-button switch

Installation of the LF instead of two separate devices is preferable from the point of view of saving materials for installation. In addition, it is more convenient to use one switch: using the keys, you can turn on and off the light in different rooms with one hand movement

Option number 2. The second common use of a two-button switch is a chandelier control. The design of the lighting device makes it possible to connect light bulbs to two different keys, thanks to which the light level is adjusted.

If one key controls 2 lights, and the second 4, then three lighting modes can be used: muted (2), light (4), and intense (6).

Adjust the degree of intensity of lighting

If bright lighting is required for reading, playing, or family dining, then include all lights; to create a peaceful atmosphere for the evening, enough dim light from a single lamp

A large number of modern chandeliers, especially on LEDs, are controlled from the remote control. Particularly advanced in this direction are multi-colored multi-mode Chinese models. But the option with the switch is still safer - the remote can fail, and the electrician rarely fails.

With DV you can control not only one, but also two lighting devices (or groups) installed in one room. For example, if you connect a chandelier and a pair of sconces to different keys.

So, two-key functions are quite useful:

  • control of multiple light sources;
  • segment control of a single, but multi-track device (chandelier);
  • the ability to adjust the degree of illumination in the room;
  • saving assembly elements.

If you appreciate the capabilities of the two-key model and want to replace the old single keypad with it, you will have to change the connection scheme and most likely you need to start with the wiring.

Connection diagrams of double models

Before installation, it is necessary to divide the spotlights or chandeliers, which are planned to be connected to one LW, into two groups. To create different lighting modes, they must be unequal (for example, 2 + 6 or 1 + 2).

It is impossible to connect more than two groups to one dual keypad, for the similar purpose they use a three key switch or separate electromechanical devices.

Wiring diagram

Using the simplest wiring diagram, you can properly distribute the wires. But first you need to study the color and alphanumeric designations, so that in the future it would be easier to "communicate" with the schemes (+)

The mandatory elements of any wiring diagram of the Far East include the electrical device itself, the junction box and circuit breaker, which is installed on the switchboard.

Also required new wiresIf the old ones do not meet modern standards, aluminum wiring remains in houses built in the middle of the 20th century.

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Laid on or internal two-button switch

The model is chosen based on the design features of the room. You also need to consider the reliability of all elements of the design and ease of use of the keys

Junction box for connecting wires

The junction box is installed above the switch, in the place recommended by the rules of EIR. It must be large enough to hold the wire connections (stranding or terminal blocks)

Automatic protection device for lighting group

Ideally, for each group of lighting in the apartment is a separate machine. All automatic devices are mounted on DIN rails in a full-apartment switchboard.

Wires to create an electrical circuit

To combine all the devices in a single circuit, you will need copper wires in non-combustible insulation. The best option for connecting lighting groups is recognized as a three-core wire VVGng

Laid on or internal two-button switch

Laid on or internal two-button switch

Junction box for connecting wires

Junction box for connecting wires

Automatic protection device for lighting group

Automatic protection device for lighting group

Wires to create an electrical circuit

Wires to create an electrical circuit

One of the differences in wiring diagrams relates to grounding systems. In the houses of the old buildings used outdated system TN-C.

Its difference is that the zero and grounding conductors are connected in one PEN wire, so only two wires pass from the automat to the apartment instead of three. With the TN-C grounding system, the wiring is as follows.

Connecting a two-button switch

Two wires are supplied from the electrical panel: blue (zero) and red (phase). In the junction box, the phase goes to the red wire of the switch, where it is mounted to the common terminal, and zero is immediately transferred to the lamps of the lighting device (one or several) (+)

If you need to connect a chandelier with several horns in the conditions of the TN-C system, then the diagram looks like this.

Chandelier wiring diagram

This load distribution increases the number of wires in the junction box: 2 from the machine, 3 from the switch and 3 from the chandelier, that is, only 8 wires (+)

However, the scheme changes fundamentally if it is necessary to connect not a chandelier, where all the lamps are concentrated in one place, but connect two light bulbs. Each lighting device requires a separate wired wire.

Connecting lamp groups

The working zero from the panel is divided into two groups of luminaires, the phase still goes to the switch. From the switch two phase wires spread over both groups of light bulbs (+)

The modern grounding system TN-S does not require the unification of the earth with zero, therefore three standard conductors are laid from the shield.

Wire distribution

The distribution of wires remains the same, but in the switchboard there is an increase in the number of connections, as the ground goes along with zero to groups of lamps (+)

After finding out the type of grounding system, it remains to choose the appropriate scheme and transfer it to the circuit breaker installation drawing, specifying the installation locations of all the participating devices.

When planning, we remember that the height of installation of electrical installations for private use according to PUE is from 0.8 m to 1.7 m, the distance to the gas pipe is at least 0.6 m, to the door jamb - at least 0.15-0.20 m.

Step-by-step installation guide for DV

Before starting work, you should repeat the safety regulations, purchase all the necessary devices and wires, as well as prepare a tool for device installation and wire connections.

You will need a wall chaser, a drill, and a hammer drill if new wiring is required. Work gloves, protective clothing and goggles (mask) in the process of performing “dirty” work will not be superfluous.

Installation of the protective device in the switchboard

There is a possibility that a separate machine for one lighting group is already installed on the panel. But this is only possible if the house is new or has recently been overhauled. Previously, it was not accepted that rosette and lighting groups be combined into separate circuits.

Installation of the circuit breaker

Separate room lighting lines provide more options when installing new luminaires or in the process of repair work: you can completely turn off the light in one room without affecting the rest premises

We strongly recommend to work on installing the machine call a qualified electrician, since independent manipulations with protective equipment in the panel are prohibited.

All work in the future associated with wiring, you need to start it from the general apartment electrical panel or cabinet, in particular, with the automatic circuit breaker of the circuit of interest (in our case - lighting).

Wiring options: hidden and outdoor

In urban apartments and modern cottages, hidden wiring is used, as it provides more room for decoration, and is also safely disguised behind a layer of insulation in the wall.

In wooden houses realize open wiring type, because laying the wires inside the logs is complicated and expensive - each cable must be placed inside a metal pipe.

Outdoor retro wiring

For outdoor performance, wires are produced in a special sheath and fittings - ceramic rollers. The most popular are retro-style collections with rotary switches and twisted wires.

To organize the power grid in a regular apartment, you need to wall grooves in all distribution boxes, outlets and switches.

The grooves, according to the EMP, must pass horizontally (at a height of at least 2 m from the floor) or vertically.

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Wall trenching with special tools

For cutting smooth grooves using a wall chaser - a professional tool equipped with a vacuum cleaner to collect building dirt and dust

Preparing wire grooves

To remove carved fragments of concrete, plaster or brick from the grooves, use a hammer drill or a drill. Manually have to beat out longer

Cutting a hole for the switch

A perfectly round hole is obtained using a special drill bit for the drill bit. The diameter of the crown should coincide with the diameter of the bottom plate.

Seal mortar mortar

To fill the grooves with the wires and create a basis for further finishing the walls, use plaster or a plaster solution, on it also podozetnik

Wall trenching with special tools

Wall trenching with special tools

Preparing wire grooves

Preparing wire grooves

Cutting a hole for the switch

Cutting a hole for the switch

Seal mortar mortar

Seal mortar mortar

At the same stage set the junction box and under the hood, fixing the plaster. Shtabing is the longest, laborious and difficult stage.

After it is obligatory to clean the room: you must take out the garbage, vacuum and clean the floor. Dust particles should not get into the electrical box or inside the switch mechanism, that is, at the junction of the wires.

Wire connection in junction box

The distribution box is installed directly above the switch or in another place convenient for maintenance. It can not be hidden under the cladding on the wall, as at any time intervention may be required.

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What wires lead to the box

From four sides through special holes inside the box lead the ends of the wires from the switch, circuit breaker and lighting

Stripping and Stripping

With a construction or clerical knife, it is necessary to remove the overall upper insulation, and then the second layer of each wire separately

Wiring ready for connection

On top there are two power wires - phase (cor.) And zero (syn.), Below the switch - phase (cr.). Two phase wires must be twisted first.

The simplest connection method is twisting the wires.

Then the feeding zero (syn.) Is twisted with both zero (blue) fixtures. The last to connect the phase wires of the switch (Bel. and green.) with phases of fixtures (brown)

What wires lead to the box

What wires lead to the box

Stripping and Stripping

Stripping and Stripping

Wiring ready for connection

Wiring ready for connection

The simplest connection method is twisting the wires.

The simplest connection method is twisting the wires.

The photo shows how to twist the wires. This is the easiest, but not the safest method of connecting wires. Now there are more advanced ways, for example, using terminal blocks - convenient self-tightening devices. Soldering and welding are rarely used.

Connection and installation of the switch

For self-connection and installation of a two-button switch you will need screwdrivers, pliers, round nose pliers, a knife, pliers, level.

Protect hands with electrical gloves with a protective insulating layer. In addition, the indicator screwdriver or tester is useful.

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Step 1 - Preparing a niche for installation

It is not always the switch mounted in the socket. There is the option of simply fixing the mechanism in the niche done, for example, if the device is installed in a plasterboard partition

Step 2 - Disassembling the Switch

New switch must be disassembled for installation. It is necessary to remove the keys and the decorative frame, freeing the internal mechanism for connecting the wires

Step 3 - Wire Trimming

In order not to twist the extra wires in a small niche in a tangle, the ends of the wires are cut off, but with a small margin - for a possible switch replacement

Step 4 - Stripping Wires

Remove the insulation from the end of each wire. To do this, use a stationery knife, a special knife with a hook and nippers

Step 1 - Preparing a niche for installation

Step 1 - Preparing a niche for installation

Step 2 - Disassembling the Switch

Step 2 - Disassembling the Switch

Step 3 - Wire Trimming

Step 3 - Wire Trimming

Step 4 - Stripping Wires

Step 4 - Stripping Wires

It was a kind of preparatory stage. After stripping lived You can begin to connect the wires to the switch.

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Step 5 - Connecting the Right Phase

A common phase wire having a red or brown insulation color is fixed in the terminal block according to the diagram. There are pointers on the back (for example, L)

Step 6 - Fixing Contacts

Standard switches use a screw type connection. That is, after the wire is inserted into the terminal, it must be clamped by tightening the screw

Step 7 - Connecting Outgoing Phases

The remaining two wires lead to two lamps or groups of lamps. We connect these conductors to the terminals designated by figures or arrows

Step 8 - Mounting the Mechanism

Making sure that the wires are fastened correctly, according to the chosen wiring diagram, we insert the mechanism into the socket or simply fix it on the wall

Step 9 - Verify Horizontal Position

It is necessary to align the device with respect to the horizontal axis. For this purpose, the level is used, and the position of the device is adjusted with the help of light movements.

Step 10 - Switch Mount

Usually the internal mechanism is fixed on a metal frame, which is screwed to the wall with 2-4 screws. Then check the position again

Step 11 - Installation of the decorative part

At last, the decorative outer part made of plastic parts is put in place - snap the frame and insert the keys

Step 12 - testing the operation of the switch.

The initial test must be carried out before installing the mechanism in the wall. At the final stage, another testing is performed.

Step 5 - Connecting the Right Phase

Step 5 - Connecting the Right Phase

Step 6 - Fixing Contacts

Step 6 - Fixing Contacts

Step 7 - Connecting Outgoing Phases

Step 7 - Connecting Outgoing Phases

Step 8 - Mounting the Mechanism

Step 8 - Mounting the Mechanism

Step 9 - Verify Horizontal Position

Step 9 - Verify Horizontal Position

Step 10 - Switch Mount

Step 10 - Switch Mount

Step 11 - Installation of the decorative part

Step 11 - Installation of the decorative part

Step 12 - testing the operation of the switch.

Step 12 - testing the operation of the switch.

Models of switches and wires may be different, but the wiring diagram remains the same. The connection in the junction box can differ only by the addition of earth from the incoming power and the same grounding wires from the luminaires.

As you can see, there is a lot of work on installing the LW, and even if you just need to replace and reconnect the device, you can save money by doing everything yourself. Calling an electrician will cost from 200 to 500 rubles (the cost of just replacing the switch).

Compliance with safety regulations

Electric shock may have irreversible consequences, so before each procedure for installing a switch or socket, follow a few simple rules:

  • the first step should always be a power outage on the electrical panel - to protect and install automatic machines;
  • the habit should get a regular check of the voltage in the network using a tester or indicator;
  • use only serviceable tools with insulated handles and quality, unworn materials;
  • clothes and shoes should be comfortable and not create discomfort during work.

When working with a wall chaser, a circular saw, a chipper, a perforator or a drill, it is advisable to additionally use a protective mask and respirator.

On the working area of ​​the entrance by outsiders must be banned. If children live in the apartment or there are animals, it is better to leave them for a while in another room under the supervision of adults or to send them to visit.

Conclusions and useful video on the topic

From the video below, you can learn how to independently connect a two-button light switch, how to properly connect the wires and install electrical equipment.

How to connect the wires with the terminals:

Installation of a double unit "switch + socket":

How does the chandelier connect to the DV:

Living in a modern house is impossible without the use of electrical appliances and devices, so the skills of "communication" with electricity can be useful at any time.

After learning the theory and a little practice at home, you can easily change switch, install an outlet or divide the home power supply into several convenient to maintain contours.

Do you have personal experience connecting a two-button switch? Want to share your knowledge or ask questions about a topic? Please leave comments and participate in discussions - the form for reviews is below.

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