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Connect 2 rocker switch. How to connect a two-gang switch? Features of connecting a light switch with one key: step-by-step instructions and necessary tools

Content:

In a large room and a long corridor, using one switch is very inconvenient. You will either have to stay in the dark before turning it on or after turning it off. To avoid such inconvenience, in two places in a large room or in a long corridor, pass-through switches (alternative names - switches, switches) are placed at its entrance and exit.

With their help, one light source can be controlled from two places - turn on in one and turn off in another place or vice versa. Thanks to this solution, the path in a large room or a long corridor is always illuminated throughout, which is convenient and safe. This simple solution to a common lighting problem, however, raises the following questions.

• If there is a single-gang switch, why connect a two-gang switch?
• What is the typical connection diagram of a two-gang switch?

It is based on the principle of changeover contacts

The two-gang pass-through switch contains changeover contacts. Just like the simpler single-key version. For a better understanding of the differences that these pass-through switches have, further on the diagrams we will consider their general connection sequences from 2 places:

The difference is obvious. Looking at both circuits, it is immediately noticeable how the phase wire is connected. It is connected to the first switch. The connection diagram of a two-gang pass-through switch provides for four wires or cables connecting both switches. And single-key - only two. Then there are the connections to the lamps of the fixtures.

In the diagram with single-key switches, they are connected by two wires - cables. When both changeover contacts are connected to the same wire, the light is on. This is what the single-key device diagram displays. The switching of the first switch of this circuit leads to the opening of the connection with the lower conductor, and then the changeover contact is already connected to the upper conductor. The light goes out due to an open circuit.

But if you also act with the second switch, a connection will appear with the first conductor, and the light will turn on again. It is obvious that the control of luminaires by such switches is based on the transfer of contacts. That is why the contacts themselves, and the principle of operation of switches with them, are also called changeover.

What's special about the two-key switch

The principle of operation of the switch with one key discussed above demonstrates the possibility of connecting a moving contact with only one of the two conductors. The same applies to the two-button switch. But its connection to the lighting system is made using a second changeover contact in each switch with two wires between them.

Considering a two-gang pass-through switch, the connection diagram of which has already been shown above, we are dealing with dual single-gang switches. Also, the double pass switch is distinguished by the use of four wires - cables. Each electrical circuit with one of them is an independent part of the lighting system, since it supplies power to a separate lamp without any mutual influence on the rest of the circuit.

Considering the design of a double pass switch in connection with the scheme of its inclusion in the lighting system, it is possible to conditionally designate the input and output in it. They have a different number of terminals for connecting wires - either 2 or 4. However, the design of a double switch for different manufacturers of electrical accessories may differ. This should be taken into account before connecting a two-gang switch.

For example, you can find two-gang switches with 1 input terminal for connecting a phase cable, 1 output terminal for connecting a separate light bulb, and 4 output terminals for connecting intermediate conductors. Although, based on the total number of terminals, which are still 6 pieces, such a two-gang switch must be connected according to the scheme already shown above. An example of such a switch design can be products from Legrand.

If we talk about specific examples of installations of double pass-through switches, we can mention large rooms and offices, bedrooms in which the light can be turned on at the entrance and turned off while lying under the covers, in dachas and backyards of private houses, where there are long paths and far-spaced lamps.

General connection rules

Once again, consider the connection of a two-key switch according to the diagram above. It is considered to be a general scheme. This is due to some possible differences due to changes in the design, which have already been mentioned (about Legrand products). The diagram shows a neutral wire connected to the bulbs. The second switch is connected to the phase wire by the terminals of the first and second keys. The first key makes contact with one of the two terminals. Two conductors are connected to them.

They are also connected to the terminals between which the first key contacts in the second switch. The conductor attached to it then goes to the first lamp. The conductors are connected to the second keys of switches 1 and 2 in the same way. With an increase in the number of changeover contacts, the number of connections increases, and most importantly, the number of wires in the junction box. In order to avoid errors, before connecting the pass-through switch, it is recommended to mark the wires and terminals.

• Another feature of walk-through switches is the lack of permanent positions for the keys. They do not have an "ON" function, just like vice versa in one position. The switches are interconnected, and the current flow through the changeover contacts is determined by both switches for each position of these contacts.

Example of a practical connection scheme

The first priority is to connect the phase conductor to the left and right keys of different switches (red lines). Then four intermediate conductors are connected. It is recommended, as in the image, to use connecting wires - cables of three different colors. This will avoid installation errors. It will not be superfluous to make the numbering of the terminals, if this is not on the body of the product, and attach the appropriate tags - numbers to the ends of the connecting conductors. Then in the junction box it will definitely be possible to avoid errors.

During installation work, when the connection is made (sometimes the word disconnect is also used) of the pass-through switches, a standard set of tools and accessories is used:

• pliers;
• wrenches (sometimes can be useful for some fixtures);
• level;
• wire cutters;
• stripping tongs or a sharp knife;
• screwdriver of a suitable shape;
• insulating tape;
• set of terminals.

We have tried to inform our readers about the main nuances of walk-through switches, which should be useful in practice. Always happy to help answer your questions.

Installation of a two-gang switch is available to anyone with basic knowledge of electrical safety, skills in working with tools and showing a proactive stance. How to connect a switch with two keys, how convenient it is to use - you can see this in our article. We will provide a diagram and video instruction.

Decide for what purposes you want to use a two-gang switch. Its use in everyday life can be diverse: both outdoors and indoors (in corridors, on balconies and other places). Quite often, it is practiced to connect to chandeliers in large rooms (halls,) to control the intensity of lighting. Now it is quite often used by designers for other rooms.

Connecting a two-gang switch: preparatory work

It is worth noting that before you connect the light switch, which is double, you need to lay the wiring. If the house is just being built and hidden wiring is carried out in it, then there are no difficulties. Even before the plaster is applied.

After that, you need to connect the switch itself and the fixtures to the wiring. All wires are laid according to the diagram (see below).

The two-gang switch is designed to turn on and off two electrical appliances from one place or control separate sections of one appliance.

Most often, such switches are used to switch the operating modes of the chandelier: each of the two keys turns on one of the two groups of lamps, and when both keys are turned on, the entire chandelier is connected completely.

Using this switch, you can control the illumination of the room. Also, the use of a light switch with two keys is useful for turning on the lighting of a separate bathroom and toilet.

It is actually not as difficult to draw up a connection diagram for a two-lamp switch as it might seem at first glance. If this is a private house, connecting a double light switch will be convenient for lighting the street when leaving. If it is possible to use a lighting device with a two-gang switch on the balcony, the presence of the device there will also be appropriate.

Each group can have a different number of bulbs - it can be either one or ten or more bulbs. But a two-gang switch can only control two groups of lamps.

It is clear that if it is planned to carry out open wiring, then each cable that needs to be connected to a two-gang switch and a lamp is laid in separate cable channels or corrugated pipes.

If the wiring in the house has been used for many years, and the existing electrical wires are not suitable, then they will need to be replaced. In the event that they were mounted in an open way, there will be no problems. If they were hidden under plaster, you will have to make new ones and lay new cables.
After placing the cables in their places, proceed to connect them.

Before starting work on replacing the wiring in an apartment or a private house and installing a two-gang switch, for safety reasons, the power supply should be completely turned off.

To do this, it will be enough to turn off the automatic switch, which is at the beginning of the circuit designed to supply current to the lighting fixtures.

And so, when all the preparatory work is done and the wires are placed according to the diagram, you can start connecting the two-gang switch.

Preparing wires for correct installation

Depending on the type of connected device, the preparation of wires may consist of various manipulations. If a chandelier is being installed, where 2 wires leave each lamp group, you can connect it in accordance with your preferences.

Modern luminaires are often sold with sections of wires ready for switching, mounted in a certain way. In this case, to change the options for combinations of lamps, you will have to disassemble the base of the chandelier or sconce. If this is of great importance to you, pay attention to the wires at the time of purchase in order to avoid unpleasant surprises when connecting the device.

There are usually three wires coming out of the junction box. It is necessary that their length does not exceed 10 cm. This is quite enough for comfortable work. If the wires are longer, just cut them off.

Next, you should clean the ends of these wires from insulation by about 1-1.5 cm and connect them to the corresponding terminals of the switch. The phase is connected to the terminal marked “L”, and the remaining wires, depending on which switch key you want to use for a particular section of the lamp or a separate device.

If you have a modular type switch, that is, consisting of two separate single-gang components, you must provide power to both of its parts. To do this, make a jumper from a small wire and install it between the two halves of the switch.

Two-button switch wiring diagram

The two-gang switch is 2 single keys assembled in one housing. The neutral and ground wires approach the sections directly, and the phase passes through the switch.

Thus, when the corresponding key is actuated, the circuit breaks, that is, the phase suitable for a certain section of the device or a separate device. The connection of the switch to the junction box is described above. It is often not clear how to carry out the wiring at the place where the chandelier is connected to the double switch.

There may be several options, depending on whether the number of wires on the ceiling matches the number of wires coming out of the chandelier. The simplest option: an equal number of wires from the ceiling and the chandelier (mostly 2 by 2, or 3 by 3).

Here you just need to twist the corresponding wires that you previously rang and marked. Connect the zero wire from the ceiling to the zero of the chandelier, and the phase wire from the ceiling to the phase of the chandelier and always to the switch itself. Installation completed.

In the case when three wires come out of the ceiling, and you have more of them on the chandelier, you must pre-distribute the pairs into sections and connect each of them to only one of the phase wires. In this case, both groups must certainly be connected to the neutral wire. If you find that 4 wires come out of the ceiling, then one of them is grounding. Its presence is typical for modern buildings.

If your chandelier has a similar wire, then you just need to twist them together. If not, then the wire coming from the ceiling must be insulated. Protective ground wires can be recognized by their characteristic yellow-green color and the “PE” marking. Possible malfunctions and general recommendations for their prevention.

That is, there is no distribution of fixtures on the switch keys. Another option: when the chandelier is turned on, only some of the lamps work, and all do not light up even when both keys of the switch are pressed.

Most likely, when connecting, you did not match certain wires and fastened them in the wrong order. Perhaps you have neglected the ringing of wires on the ceiling and in the junction box, and relied only on colors and markings.

And in no case should this be done, since when laying wiring, non-compliance with marking standards is very common. In order to find the cause, you need to return to the beginning of the installation and carefully follow all the steps. Armed with an indicator, be sure to ring all the wires and mark them. If you suspect a wire malfunction, contact the masters.

If there are no problems with the wiring, re-fasten the marked wires according to the diagram and be extremely careful at the same time.

Scheme for connecting a two-gang switch to a chandelier

Materials required for installation

To make a connection, you need:
• Electrical wires (the cross section must be at least 1.5 square millimeters).
  Their length is determined by measurements.
• Double switch.
• Mounting box in which the switch will be placed.
• Terminal blocks.
• Tape.
• Tools

As for tools, their list should consist of:
1. screwdrivers for cross and flat slots;
2. a mounting knife or a device with which insulation will be removed;
3. side cutters;
4. level;
5. pliers;
6. hammer and chisel (in case you need to make a small strobe or hole for the socket).

Before installation, you should carefully familiarize yourself with the location of the switch contacts. Sometimes on the back side of the switches you can find a switch contact diagram, which shows the normally open contacts in the off position and the common terminal.

The double switch has three contacts - a common input and two separate outputs. A phase from the junction box is connected to the input, and two outputs control the inclusion of groups of chandelier lamps or other light sources. As a rule, the switch must be mounted so that the common contact is located at the bottom.

If there is no circuit on the reverse side of the switch, then the contacts are defined as follows: the input contact is on one side of the switch, and the two outputs to which the lighting devices are connected are on the other side.

Accordingly, the two-gang switch has three clamps for connecting wires - one at the input contact, and one at two output contacts.

So, we figured out how the switch works. Now you need to prepare the workplace, tools and materials. We must not forget that the most important thing when performing any work related to electricity is safety.

Each of the keys of the two-gang switch can be set to one of two positions, turning on or off the appliance. Each group may have a different number of light bulbs - it can be either one or ten or more lamps. But a two-gang switch can only control two groups of lamps.

First you need to check the wires, that is, test which one is the phase one. With the help of an indicator screwdriver, this is not difficult to do: upon contact with the phase in the screwdriver, the signal LED will light up.

Mark the wire so that you do not confuse it with zero when performing further operations. Before you start installing the switch, you need to secure your work area.

If we are talking about a chandelier, you should de-energize the wires coming out of the ceiling. When the type of wires is determined and marked, you can turn off the power (for this you should use the appropriate machine in the shield) and proceed with the installation of the double switch.

Determine in advance and ensure the presence of connecting material for the wires.

Usually applied:
• self-clamping terminals;
• screw terminals;
• caps or electrical tape for hand-twisted wires.

The most convenient and reliable way is fixing with self-clamping terminals. Screw clamps can weaken over time, and electrical tape tends to lose elasticity and dry out. Because of this, the reliability of the connection can be significantly weakened over time.

Self-clamping terminals provide a reliable, durable connection. To properly connect the switch to the light bulb, you must carefully study the step-by-step instructions on how to do this. After that, you can not only make the installation according to the scheme, but also identify possible malfunctions. When providing electrical installation in premises, the question often arises of how to lay a cable using a corrugated pipe.

To accurately perform all operations, you must have the following tools:
1. 2 screwdrivers - flat and Phillips;
2. assembly or clerical knife or other device for stripping insulation;
3. pliers or side cutters;
4. construction level.

Possible malfunctions

Common faults are when the circuit breaker does not operate in the way you expected it to. For example, when the first key is pressed, a certain section does not work, and when the second key is pressed, all the lamps work at the same time.

That is, there is no distribution of fixtures on the switch keys. Another option: when the chandelier is turned on, only some of the lamps work, and all do not light up even when both keys of the switch are pressed. Starting with the choice of the assembly place, size, and ending with the connection of all the components according to the scheme - this is the secret of how to make a Tesla transformer with your own hands.

Particular attention should be paid to safety precautions. Is it possible to connect a three-phase motor to a 220 volt network? This article will provide an opportunity to understand how high-power devices work in single-phase networks. And finally, the saddest option: the switch does not work at all.

Most likely, when connecting, you did not match certain wires and fastened them in the wrong order. Perhaps you have neglected the ringing of wires on the ceiling and in the junction box, and relied only on colors and markings. And in no case should this be done, since when laying wiring, non-compliance with marking standards is very common.

In order to find the cause, you need to return to the beginning of the installation and carefully follow all the steps. Armed with an indicator, be sure to ring all the wires and mark them. If you suspect a wire malfunction, contact the masters. If there are no problems with the wiring, re-fasten the marked wires according to the diagram and be extremely careful at the same time.

Thus, simple recommendations should be followed so as not to encounter problems when performing electrical work:
1. before starting work, it is imperative to turn off the electricity in the work area and make sure that no one accidentally turns it on at the most inopportune moment;
2. it is necessary to always act according to the instructions and not neglect the deep comprehensive preparation: check and mark the conductors, clean them correctly and prepare them for subsequent operations;
3. it is necessary to arm yourself with tools, at least a minimum of devices is required, otherwise it will not be possible to avoid problems with the reliability and strength of the connections being made.

How to connect two light bulbs to a double switch

In distribution the box was brought to phase-zero power, a three-wire wire was lowered onto the switch. The phase conductor is connected to the common terminal of the switch, the other two conductors will be, it is a phase interrupted by contacts that return to the distribution box and each wire goes to its own lamp. Zero is common and leaves immediately from the junction box to the lamp holder.

Why zero on the lamp, and the phase on the break on the switch, this is related to safety. So that when the switch is off, the phase does not remain on the lamp holder.

Imagine a fictional situation, a lamp burned out, you are trying to replace it, turned off the switch, took an aluminum stepladder, installed it on a damp concrete floor and climbed onto it, grabbed the lamp socket, and there is a phase on it, a current will pass through your body through a conductive stepladder, the consequences may range from falling from a height to fatal electric shock.

Hence the conclusion, before doing something, it is necessary to clearly present the expected result. It’s not worth doing it by the method of scientific poke and hoping maybe it will work out.

Illuminated two-gang switch

A backlit switch differs from a conventional one only in that it contains a backlight indicator. This indicator can be a neon lamp or an LED with a limiting resistor. The backlit switch circuit is quite simple.

The indicator is connected in parallel with the switch terminals. When the light switch is turned off, the backlight indicator is connected to the neutral wire of the network through a small lamp resistance and lights up. When the lighting is turned on, the indicator circuit is short-circuited and it goes out.

The wiring diagram of the illuminated switch is based on the following sequence of actions:
• the lighting circuit is de-energized. For reliability, the absence of voltage is checked with a probe or multimeter;
• a box for the switch is installed and fixed in the opening in the wall. When replacing the old one, it is first dismantled;
• the key is removed from the switch and the power wires are connected. In parallel with the cables, the outputs of the backlight indicator are connected;
• the switch body is installed in the box and fixed with screws;
• the network is turned on and the operability of the switch, its backlight and the lighting network are checked.

The sequence of conducting light in the room

The sequence of conducting light in a room has its own specifics:
1. first you need to de-energize the housing by turning off the switch on the disconnect panel or circuit breakers, you can check the current shutdown by inserting the lamp into the outlet (if it is not on, then everything is turned off);
2. before installation, the bare parts must be cleaned;
3. the pass-through neutral wire from the shield must be combined with two contact groups;
4. the second phase wire from the shield is attached to the wire going to the common contact;
5. the color of the wires of different groups must be different (the first wire is connected to the phase of one group of fixtures, the second is connected to another group);
6. phase wires are attached to their consumer groups;
7. zero wiring from the shield is connected to the zero wiring of fixtures (a two-key switch combines two groups of consumers);
8. you need to carefully consider the safety of finding a large number of associations located in the cutting box (twist well, solder);
9. the switch is neatly attached to the box on the wall (the mounting wire is very rigid);
10. a decorative frame is attached to the base, the button block is inserted into the grooves, securely fixed to the body;
11. A voltage indicator will help you check if the pass switch is functioning properly.

Sometimes it becomes necessary to install a two-button switch complete with a socket. In this case, an additional section of wire is laid from the switch to the outlet. The height of the device is the most diverse: the main thing is to be comfortable.

How to find a phase wire? To properly connect a double switch, you need to decide on the wires. Sometimes doubts arise which wire is phase.

The following method will help clarify the situation:
• the ends of the wires are carefully laid aside (so as not to stick together);
• turn on the voltage on the shield;
• touch the bare parts with an indicator screwdriver;
• the phase wire, when touched, the light bulb will light up.

Dimmers help control the intensity of lighting. There are touch, pressure, rotary. The installation scheme for all types is the same.

Precautionary measures

What measures should be taken when installing light in the house? Working with a voltage circuit requires a reverent approach, taking into account safety rules.

In order to avoid injuries/accidents, before connecting the two-gang switch, you should properly turn off the current supply, check for voltage on the input cable.

Safety regulations:
• Work on the installation of sockets / switches is better to start before the design repair.
• Before starting installation, check the condition of the wiring.
• Properly organize actions during daylight hours (it is harder to install in the dark).
• Be sure to check the serviceability of light bulbs and other parts.
• Use a voltage indicator to check the power supply is off.
• Turn off the circuit breakers or package switches on the home panel.
• In accordance with safety standards, it is correct to use red phase wiring.
• The neutral wire is blue.
• All actions should be carried out with extreme caution.
• To avoid electric shock, special attention is paid to rooms with a high level of humidity.
• The power supply of the porch, bath, basement requires the use of reinforced insulation.
• The light bulb is replaced when the electricity is off.
• Using a ladder, an insulating mat is placed at the base.
• After connecting the electrics in the house, there should be no hazardous areas.
• Contacts are connected in compliance with all technical standards.

All switches are divided according to several criteria:

1. By installation method:

• Overhead for outdoor wiring;
• Internal for hidden wiring, recessed into the holes made in the walls.

1. By way of switching control:

• Keyboard constructions, the most common way;
• Swivel;
• With an electronic sensor for movement or the level of outdoor lighting, there can be acoustic, temperature sensors, depending on the need for operating conditions;
• With lace or chain;
• Touch;
• Remote control, with a remote control in the radio or IR range, online via the Internet;
• Dimmers.

1. According to the switching scheme of contacts

• Conventional make and break one contact (Single-key);
• Two and three-gang switches
• Changeover (through) single-key and multi-key;
• Cross.

1. According to the method of attaching wires to contacts:

• Screw;
• Spring clamps.

The designs of the mechanisms of the contact groups are different, it depends on the manufacturers.

Connection of conventional single-gang and two-gang switches

The simplest design and connection diagram is considered for ordinary switches that switch one contact at a time, close or open it when a key is pressed. Manufacturers make models containing from 1 to 3 contacts in one housing, each of which is switched by a separate pressing of the corresponding key.

As can be seen from the diagram, the basic principle for connecting switches of any type is that a phase wire passes through its contacts. A typical mistake of novice installers, a neutral wire is passed through the switch, the phase wire is connected from the box to the dump. It is not safe during operation, it can cause electric shock even when replacing the lamp. The neutral conductor through the junction box is connected directly to the contacts of the lighting fixtures. Grounding can be connected to the body of the ceiling lamps immediately from the ground loop or through a twist in the box.

Design and connection of continuous single-gang switches

The designs and switching circuit of feed-through switches are more complex than conventional models, but the general principle remains the same, a phase wire passes through the contacts. There are options with one, two and even three keys in one case.

Such switches are used in lighting control circuits from two points, it is very convenient in many cases:

• On flights of stairs;
• long alleys;
• tunnels;
• Sports arenas, stadiums, swimming pools and other facilities.

In these cases, users do not need to walk long distances to control the lighting, any nearest switch is used. The diagram shows the lighting system in the on position, when you press any of the switches, the contact will be transferred to the black line, the lighting will turn off. The design of the circuit is such that the next time any key is pressed, the circuit will close through the red or black line and the light will turn on.

Wiring diagram for two-button walk-through switches from two points

The design of a two-gang pass-through switch differs from a one-gang switch in that elements of two one-gang copies are built into one housing. Each key works on the principle of the scheme presented above.

Switch connection steps

First of all:

• A wiring diagram is drawn up
• The total power consumption of lighting devices is calculated;
• According to the tables, we select the brand of cable, the cross section of the conductive wires and the maximum allowable length.

Copper conductors, at 220 V, single phase, three-core cable

According to the requirements of the PUE, three-wire lighting circuits are used, therefore it is recommended to choose cables with three cores. For living conditions, the most popular brands are VVG, PUNP, VVP, MYN, others with double insulation and three copper conductors;

• We select a switch of the appropriate design according to the power consumed by the lighting lamps. Usually, the substrate of the case of products in networks with currents of more than 10A is made of ceramic.

After the calculations and the acquisition of all the necessary materials, you can proceed with the installation. Consider the classic version of a more complex scheme, connecting two-way switches with two keys for hidden wiring in the tunnel:

• At the edges of the tunnel on a one-sided wall, holes for socket boxes for switches are drilled with a puncher with a crown, at a height of 60 -90 cm from the floor:
• On one side, a hole for the junction box is drilled above the socket 15-20 cm under the ceiling;

Tip #1 If possible, depending on the conditions, install the junction box and the first circuit breaker on the side closest to the switchboard. In this case, less input cable from the switchboard to the box, which has the largest wire cross section in the circuit, will be required.

Two groups of lighting devices are installed evenly along the walls or ceiling, wires are laid between them, the connection is made in parallel. This ensures the operation of all serviceable lamps if one or more burnt out;

• The wires of the lighting groups are brought into the box, the yellow-green ones are connected to the body of the lighting fixtures and the ground, the blue or blue wire to the base contact of the lamps and the neutral conductor in the junction box. Red (white, yellow, brown), according to the requirements of the PUE, are connected in the box through the switch to the remaining contact of the base.

One of the significant errors is considered to be the non-compliance with the requirements of the Electrical Installation Code for matching the color of the wire insulation to the functional purpose. This makes it difficult to repair and maintain the network by other electricians, you have to ring all sections of the circuit to disconnect the twists in the box.

Features of the design and connection of switches from different manufacturers

The general principle of operation, switches are one circuit and opening of one or a group of contacts, design solutions may be different, the methods of connecting wires differ. One of the most popular models on the market are Lezad switches. They have standard housing dimensions for installation in socket boxes and screw fastening mechanisms with sliding strips. A significant difference from other models is the contacts with clamping springs, it is not required to clamp the wire on the contact with screws, it is enough to insert it into the hole and it will be securely fixed by the spring.

In the connection example we have considered, two-button switches with six contacts are used. Let's show how they are connected to the circuit.

Please note that there are five conductive wires going to the first switch through the junction box. The phase wire between contacts 1 and 2 is connected by a jumper.

Tip number 2 If necessary, pass-through switches can always be used as usual. To do this, it is enough to connect only one group of contacts 1 - 5 or 2-6.

Connection of switches without wall chasing

When the repair is completed, but it becomes necessary to change the wiring diagram in the lighting system, it is irrational to spoil the interior by chasing the walls. There are several options to solve this problem:

• Lay external wiring from the box to the new switch in the cable channel;
• Holes can be drilled in hollow walls and a rope with a weight can be lowered vertically from the top of the box down to the switch. Then stretch the wire with a rope.
• The easiest, but not cheap way, is to install a remote radio switch. It is not tied to wiring and is installed at any point at a distance of about 10 m from the lighting device, it depends on the model of the device.

Installation and connection of the remote switch

Manufacturers make many models with different characteristics and control options:

• Simple on/off switches;
• Programmable, ON ONLY, OFF ONLY;
• With timer and other options.

In any case, the remote control system consists of two parts:

• The control signal transmitter, which is a switch, has a housing similar in size and appearance to a surface-mounted switch for external wiring. In its circuit board design, with a battery and a spiral antenna, the antenna can be made in the form of a winding track on the board. Attaches to the wall with screws or double sided tape.
• The block of the receiver of control signals and switching of contacts has a miniature size, contacts for connecting wires and is installed on the body of a chandelier, ceiling lamp or other lighting device.

This diagram shows a control unit for a two-gang switch with two lighting groups, there are models with one group. Before installing the remote switch, the wires from the conventional switch are shorted. The case of the old switch can be left in place or simply turned on, then 220V will constantly come to the lighting device and power the control unit.

Characteristics

Domestic radio switches of this series have a large range, the manufacturer guarantees operation without replacing the battery for up to 7 years, the period of trouble-free operation is up to 3 years.

FAQ

1. Why do you need a cross switch?

They are mainly used in circuits with two through switches, thus providing a third point of lighting control.

In any position of the cross switch key, the circuit provides lighting control from two extreme switches.

1. The dimmer comes with 4 wires to chandelier 3, how to connect a conventional switch to the place of a faulty dimmer?

Don't go into too much detail about how the dimmer worked:

Scheme for connecting a two-gang switch to a chandelier

• Turn off the corresponding machine on the switchboard by de-energizing the lighting system in this area;
• Disconnect the dimmer from the wires;
• Using an indicator screwdriver, determine the phase wire that comes from the junction box;
• Ring out two wires that come from the switch to the chandelier, connect them to the contacts of the lamps of the first and second groups. The remaining neutral wire comes from the box, has a common contact on the lamps of both groups.
• On the switch, the phase is connected to a common contact, the wires coming from the chandelier to the other two contacts. Thus, the phase with the keys will be switched to the lamps of the lighting groups.
• Insulate the remaining wire from the box to the switch and leave it free.
• Turn on the machine on the switchboard and check the correct connection.

Doing your own electrical work can save you a lot of time and money. To perform such operations, you need to study their features, the order of execution, etc.

It is these issues that we will deal with in our article, having considered the features of performing electrical work. The information is presented in the form of a step-by-step instruction, provided with detailed photos, which illustrate the step-by-step installation process.

And although the connection diagram of a two-gang switch for two light bulbs may seem complicated at first, but, having figured out the principle of operation of such a device, even a novice electrician can handle the installation.

This type of switch is most often used for lighting in two adjacent rooms or for controlling a multi-track chandelier. The first option is traditionally used for a separate version of the bathroom or for lamps installed in different rooms.

If it is convenient to turn on both lighting devices from the same point, it is more reasonable to install one device with two keys, and not two identical one-button switches.

If you organize the control of the chandelier in this way, you can adjust the illumination of the room, turning on only some of the bulbs or all at the same time. Such a scheme can also be useful in the kitchen, for example, to turn on the top and bottom lights.

It may not be easy for a not too experienced master to figure out the order of connecting a switch with two keys. But if you understand the principle and sequence of work, then there will be no problems.

Features of mounting the switch

Suppose that our task is to equip a new building with electrical wiring, which the hand of an electrician has not yet touched. Consider the features of electrical installation work in stages.

Stage # 1 - preparatory work

First you need to prepare the necessary tools and materials:

• single-pole machine and;
• switch with two keys;
• junction box;
• two lamps;
• din - rail to install devices to protect wiring and owners;
• socket box suitable in size and type;
• electrical tape;
• perforated tape for cable installation;
• fasteners;
• screwdrivers, Phillips and flat, or a screwdriver with nozzles;
• voltage indicator;
• knife, wire cutters, pliers, etc.

Start the connection from the preparatory stage. First you need to install a junction box in which all the wires will be collected and connected in accordance with the diagram.

To protect the circuit from breakdowns and overloads, you will need an automatic machine, and an RCD will be required to protect the owners of the premises from shock in the event of a current leakage. These devices must be mounted in the switchboard of the house or apartment, where suitable places are provided for them.

The double switch connection diagram will help you connect all the elements and wires correctly. Understanding the principles will greatly facilitate installation

If for some reason such installation is not possible, the RCD and the machine are installed on a mounting rail fixed directly on the wall. After that, you need to put the socket for the switch.

The socket should be chosen depending on the material of the wall: under concrete or drywall. Devices for concrete are also used on other similar bases: for bricks, gas and foam concrete, expanded clay blocks, etc. A hole of the desired size is made in the wall, and then the box is fixed with gypsum or cement mortar.

Step #2 - Choosing and Installing a Suitable Socket

For plasterboard work, other models and installation methods are used. They are equipped with spacers that allow you to fix the device in the hole. The same socket boxes are taken for installation on a wall with sheathing made of chipboard, plywood, etc.

Now you can start wiring. In accordance with the drawn up scheme, it is necessary to make markings and lay strobes if hidden cable laying is planned.

When choosing a socket for a switch, you need to pay attention to this nuance. New models of such devices are made of plastic, they have a diagonal of 67 mm. Old, usually metal, counterparts are slightly larger, they have a diagonal of 70 mm. This small difference can be decisive.

Modern two-gang switches are perfect for 67 mm sockets. You can fix the mechanism inside with the help of spacer legs or screws.

On metal models, the three extra millimeters can make it very difficult to install the switch, since the length of the spacer legs, which are usually located on the sides of the mechanism, may not be long enough to securely fix it.

The internal insulation of a three-core wire differs in color for each core: for phase, zero and ground. This marking must be strictly observed.

One core is for zero, the second is for grounding, the third is for phase. You need to remember which color wire is allocated for each function.

Before connecting the ends carefully. In this case, it is necessary to ensure that the color marking on the wires connected to the machine matches those that come out of it. If the neutral wire runs at the top on the right side, then it should also be on the right at the bottom.

Grounding for lighting fixtures is not always provided for in standard apartment schemes. In this case, the third wire remains unused.

If there is a ground loop, it should be connected to further protect the lighting from possible accidents. This circuit is connected to the corresponding contacts on the lighting fixtures. Newer models of fixtures usually have grounding contacts.

Such a precautionary measure when connecting a two-gang switch to two bulbs is required if the lighting is installed in a bathroom or other room with high humidity. Ground wires that have not been used should be insulated and laid so that they do not interfere with further installation work.

Stage # 4 - installation and connection of the switch

On the outside, the standard model of the switch consists of two keys and a decorative frame, although the design may vary. Behind them is a working mechanism. To open it, you need to remove the keys. To do this, each of them is hooked with a screwdriver and disconnected. Some manufacturers make small protrusions on the edges of the keys to facilitate the process of disassembling the device.

After the keys are removed, you need to remove the decorative frame. To do this, unscrew the fasteners or open the latches. The contacts of the instrument may differ depending on the model. Usually they are made screw or self-clamping. Now you can connect and install the switch.

After removing the outer layer of insulation from each core, approximately 10 mm of insulating coating must be removed -. You should first study the design features of the device, paying attention to the type of contacts. The switch must be turned upside down and examined.

There is usually a diagram with which you can correctly connect. If there is no such information on the device, you need to look for it in the instructions or use the devices to determine which contact is for the phase input and which two are the outputs.

The absence of the necessary marking is a rare case, typical for some old models of the switch from the Soviet era or for cheap low-quality devices made in China. Sometimes simple logic helps: the entrance and exit are almost always located on opposite sides. There is only one input, and there are always two outputs in such switches.

The contact inlet and outlet are usually located on opposite sides. The phase input is indicated as L, and the connection of the output contacts is indicated by arrows

Usually, the letter L indicates the place of connection of the phase wire input, and the arrows on the opposite side indicate the place of connection of the wires responsible for the operation of a separate key.

The core, which is most often covered with white insulation, must be connected to the phase input, and the remaining two cores, which are blue and yellow-green in the photo, to the corresponding sockets. After all the contacts are connected, you need to deploy the device and install it in the socket.

In models with self-locking contacts, connection is extremely simple. The stripped end of the wire just needs to be inserted into the connection point. A clamp is installed there, which automatically fixes the connection with a spring. Thus, all three wires are connected.

It is necessary to carefully monitor the color marking of individual cores. After they are inserted into the connectors, you need to pull back a little to make sure the connection is secure. If it is necessary to remove the fixed wires from the clamp contacts, then the connection must be disconnected.

To do this, buttons are provided next to each clip; they can be located on the ends of the device. When the button is pressed, the clamp opens and the wire can be easily removed. On switches with screw terminals, the designation of the input and output for wires is often missing.

Usually, the phase input is located at the top, and two outputs at the bottom. In the design of such devices there is a plate to which movable output contacts are attached, their purpose is obvious. To fix the contacts in such a device, you need to unscrew the clamping screw, insert the stripped edge of the wire into the hole, and then screw the fastener back.

If the ground conductor is not used at this stage, it is recommended to take care of its insulation again. Now you need to clean the end of the phase wire leading to the lamp from the outer and inner coating. It must be connected to one of the wires that come out of the switch.

In the same way, you need to do with the phase wire that leads from the second lamp, it is connected to the second core coming out of the switch.

Again, all unused ground conductors should be insulated and laid in a junction box. If grounding is provided, the corresponding wires must be connected in series. It remains to connect the zero cores: one from the power wire and two more from the fixtures. They are simply twisted together.

Stage # 6 - check the health of the scheme

Now it remains to screw the bulbs into the lamp sockets and check the operation of the circuit.

At the end of the assembly, the connection diagram of the double switch will look something like this. At this stage, you need to check: turn on the RCD and the machine, and then the keys - one by one and together. After checking the protection device must be disabled

First you need to turn on the RCD and the machine. After that, the operation of each switch key is checked in turn, and then both lamps are turned on and off at the same time.

If everything is done correctly, the lamps will turn on and off in accordance with the position of the switch keys.

After that, you need to turn off the protective devices and insulate all the connections and complete the installation of the two-gang switch by installing a decorative frame.

Conclusions and useful video on the topic

A visual process of installing a two-gang switch can be viewed here:

In fact, connecting such a device is not difficult, you just need to understand the order of all operations and comply with safety requirements. It is better and easier to use modern fixtures and materials because they are easier to install and better match.

Do you want to clarify incomprehensible points on the installation of the switch, which we have not covered in sufficient detail in this article? Or would you like to supplement the above material with valuable comments / advice based on personal experience? Please write your questions in the comments block, express your opinion, add useful recommendations.

We connect a two-gang light switch at home

There are many applications for double switches. They are usually connected to chandeliers in order to be able to adjust the intensity of lighting: turn on a certain group of lamps, one lamp, or all at the same time. Another common application: lighting separate bathrooms or connecting the hood and lighting.

In private homes, a two-button switch often turns on outdoor lighting at the entrance or inside in the hallway. Where lighting is carried out on a balcony or loggia, a double switch will also be appropriate so as not to install 2 separate switches for each zone in the room. Zoning rooms with lighting or design accents is becoming more popular, and double switches are also often used to implement such tasks.

Connecting objects to a switch with two keys is quite within the reach of an average economic person. This does not require supernatural knowledge and skills. All that is needed is to have a certain inventory and understand all the stages of work.

What you need to know before connecting a double light switch

First you need to check the wires, that is, test which one is the phase one. With the help of an indicator screwdriver, this is not difficult to do: upon contact with the phase in the screwdriver, the signal LED will light up. Mark the wire so that you do not confuse it with zero when performing further operations.

Before you start installing the switch, you need to secure your work area.

If we are talking about a chandelier, you should de-energize the wires coming out of the ceiling. When the type of wires is determined and marked, you can turn off the power (for this you should use the appropriate machine in the shield) and proceed with the installation of the double switch.

Determine in advance and ensure the presence of connecting material for the wires. Usually applied:

• self-clamping terminals;
• screw terminals;
• caps or electrical tape for hand-twisted wires.

The most convenient and reliable way is fixing with self-clamping terminals. Screw clamps can weaken over time, and electrical tape tends to lose elasticity and dry out. Because of this, the reliability of the connection can be significantly weakened over time. Self-clamping terminals provide a reliable, durable connection.

To correctly connect the switch to the light bulb. you need to carefully study the step-by-step instructions on how to do this. After that, you can not only make the installation according to the scheme, but also identify possible malfunctions.
When providing electrical installation in premises, the question often arises of how to lay a cable using a corrugated pipe. You can find all the tips on choosing corrugations and the sequence of work here.

To accurately perform all operations, you must have the following tools:

• 2 screwdrivers - flat and Phillips;
• assembly or clerical knife or other device for stripping insulation;
• pliers or side cutters;
• construction level.

Preparing wires for correct installation

Depending on the type of connected device, the preparation of wires may consist of various manipulations.

If a chandelier is being installed, where 2 wires leave each lamp, you can connect it in accordance with your preferences. Modern lighting technology often has ready-made wires already connected in a certain way. In this case, to change the options for combinations of lamps, you will have to disassemble the base of the lamp. If this is of great importance to you, pay attention to the wires at the time of purchase in order to avoid unpleasant surprises when connecting the device.

There are usually three wires coming out of the junction box. It is necessary that their length does not exceed 10 cm. This is quite enough for comfortable work. If the wires are longer, just cut them. Next, you should clean the ends of these wires from insulation by about 1-1.5 cm and connect them to the corresponding terminals of the switch.

The phase is connected to the terminal marked “L”, and the remaining wires, depending on which switch key you want to use for a particular section of the lamp or individual devices.

If you have a modular type switch, that is, consisting of two separate single-gang components, you must provide power to both of its parts. To do this, make a jumper from a small wire and install it between the two halves of the switch.

The two-gang switch is 2 single keys assembled in one housing. The neutral and ground wires approach the sections directly, and the phase passes through the switch. Thus, when the corresponding key is actuated, the circuit breaks, that is, the phase suitable for a certain section of the device or a separate device.

The connection of the switch to the junction box is described above. It is often not clear how to carry out the wiring at the place where the chandelier is connected to the double switch. There may be several options, depending on whether the number of wires on the ceiling matches the number of wires coming out of the chandelier.