Connection diagram for a single-key switch with a socket or two bulbs

Installation of switches and their connection to lighting cause difficulties for the average user. Therefore, you should first understand how the simplest single-key single-switch circuit breaker circuit works, and then the more complex ones.

Lighting Principle

Lamps of different types are used to illuminate the room. To turn them on, devices that close the electric circuit through the phase are used. The neutral wire is connected to each lamp directly.

The simplest connection scheme for a single-key switch provides voltage supply to one lamp or simultaneously to a whole group.

Key Features

1. The wires in the junction box are soldered or using Wago terminals. The twisting of wires is recommended to be used temporarily, since the contact points are oxidized, after which their conductivity decreases, and additional resistance appears, leading to heat generation.
2. Installation work with wiring and accessories is performed when the power is disconnected in the network. The absence of voltage is checked with an indicator screwdriver.
3. The light switch always separates the phase, not the neutral. Due to this, the operation of electrical equipment and the replacement of lamps become safer, because the wiring can always be de-energized.
4. To create the correct connections, it is necessary to adhere to the color marking of the wires, where the phase is most often indicated in white, brown or black, the neutral is blue or blue, and the ground is yellow, green or yellow-green.

Tools and materials

Here's what you need in your work:

• pliers;
• screwdrivers;
• side cutters;
• knife;
• soldering iron with solder and flux;
• switch;
• cable or wire;
• junction box.

Single lamp connection

The connection scheme of the single-key switch to the light bulb provides switching on and off of only one of it. Most of the wire connections from the electrical panel, luminaire and switch are made in the junction box. She has two input wires - phase and neutral.

Zero input goes directly to the bulb contact. The phase is first connected to the input of the switch, then back to the box, and lastly, to the lamp contact. Its metal casing is grounded. The connections are not so complicated, although the cores can be easily confused.

Connecting a group of two or more lamps

The connection scheme of a single-button switch for two bulbs ensures their simultaneous ignition.

The lamps are connected in parallel: between themselves two black and two brown wires. The taps from the contact points go to the junction box, where one of them is connected to the neutral wire, and the other to the phase through the switch. The contacts of the lamps are connected directly to the lamp. When choosing a switch, it is important that its rating is not lower than the total lamp power.

Connecting a switch with a socket

When a single-key switch wiring diagram with a socket is assembled, the main connections are made in the junction box.

The cross section of the supply wire is 2.5 mm ² , as it should be for outlets. Its supply is 10-15 cm. The socket is connected in parallel with the power supply, with the same core section.

A phase goes to the input of the switch, and from the output it connects to one of the two terminals of the lamp. The neutral wire passes directly through the box and connects to another lamp power contact. Here, the wiring section is taken 1.5 mm ² .

Single-key walk-through switch connection diagram

Turning on the light from 2 or more places makes it easy to turn off one or several lamps at a time when required. The most common wiring diagram for a through-switch single-key switch. Outside, it differs from a simple one by the presence of an arrow on the up and down keys. On the back, it has one input and two output terminals. Between themselves, such switches are connected in a series circuit.

Installation of passage switches presents difficulties for people who are not particularly versed in electrical engineering. First of all, it is necessary to take into account the difference in the design of the device, which is a switch for supplying current to one terminal or the other. Assembly is as follows.

1. The phase is fed to terminal 1 of switch PV1 through the box, and its outputs 2 and 3 are connected to the corresponding outputs 2 and 3 of PV2.
2. Input PV2 is connected to the phase terminal of the lamp. The power neutral passes directly through the box to the other terminal of the lamp.

Correctness is checked by connecting it to the network and randomly switching PW 1 and PW 2. In this case, the lamp should be lit and extinguished successively.

Cross switch

To turn on lighting from more than 2 places, additional cross switches are required. When pass-through devices are combined with cross-connects, connecting a single - key light switch (diagram below) allows you to control the lamp from 3 places.

The cross switch has 2 input and 2 output contacts. With one switch, the keys close or open at once two supply lines. In this regard, it is called a switch.

Important! The crossover switch is separately used only to reverse the polarity of the circuit. To control the lighting, it is used together with two walk-throughs. The assembly is done as follows.

1. In a standard way, 2 PV are collected.
2. Between their contacts A and C, a cross-over switch is turned on so that when any device is switched arbitrarily, the load circuit is alternately closed and opened. To do this, it is necessary to connect the outputs A and C of PV 1 to the inputs X and W of the cross, and its outputs Y and Z to the outputs D and F of PV 2.

If you switch on the same in series with the cross switch, the number of lighting control points will increase.

Features of connecting a cross switch

Since the circuit with a cross switch is complicated, the following must be considered when installing it.

1. The wiring is done with a four-wire cable.
2. Complex projects require an increase in the number of cable cores. Electricians prefer to assemble several simple, more reliable instead of a complex circuit.

Installation of the lamp switching system from 3 places

1. Drawing up the scheme.
2. Strobing grooves for wiring and holes for fittings.
3. Mounting accessories on the wall. The box is selected with the calculation of the placement of 12 connections and wires from other systems.
4. Installing the machine in the control panel and laying the cable from it to the junction box.
5. Connection of the zero core to the lamp contact.
6. Connecting the phase core to the input of the first PV and beyond. The contacts of the switches are connected through a junction box.
7. Connection of the phase output from the last switch to the lamp contact.

Conclusion

Simple switches can control lighting from one point, and walk-throughs from two or more. The connection scheme of the single- key switch to the lighting is the basis for all other types of models. Outwardly, all the switches are similar. The difference between them is determined by the number of terminals on the back side.