To make the adjustment of lighting in the house more convenient, pass-through switches are used, which in professional circles are also called cross over or duplicate. The main difference between this embodiment and the classic one is the presence of a mass of contacts, which makes the connection procedure somewhat more complicated. To do everything with your own hands, first you need a wiring diagram for the through switch from 2 places.
How does the passage switch work?
In the passage switch there is one key on which two arrows are drawn. The circuit of the light switch from two places is somewhat more complicated in comparison with the classical one, since the latter provides for the use of only two contacts, while there are already three of them in the entrance, two of which are considered common. The light switching circuit provides for the use of such devices in an amount of from two pieces.
When the key is pressed, the input is connected to one of the outputs - to the first or second. These are the two main operating conditions of such equipment. No intermediate provisions are provided, so that the circuit is constantly working properly.
In order not to be mistaken about which switch is used in a particular room, you should study in more detail the circuit breaker circuit breaker from two places to 1 light bulb or to several lamps, which in most cases is located on the housing of the device to be installed. It is located mainly on products from well-known manufacturers. When using low-cost models, the only solution remains - to “cause” the ends using special equipment.
The contacts are called at various positions of the key. Also, the procedure is carried out in order to ultimately prevent confusion, as irresponsible manufacturers often make a mistake in the location of the terminals during the production of switches, because of which the device simply can not work normally.
To call you need to use the arrow or digital equipment. The latter is transferred to the desired mode with a special switch and determines the presence of short-circuited sections in the tested wiring or any radio components. If you close the ends of the probes, the device will emit a characteristic sound signal, which is a fairly convenient principle of operation, since it eliminates the need for constant monitoring of the readings on the display. If there is only a pointer device, when you try to close the probes, the arrow will have to deviate completely to the right.
During this procedure, you need to find a common wire. For experienced professionals, this will not be difficult. If there are no skills, it is recommended to watch a video on the Internet in which there will be a detailed description of the connection circuit breakers from 2 places.
Connecting circuit breakers
The need to connect two bulbs to one switch often arises in the bedroom, when one switch is left near the entrance, and the second is placed somewhere near the bed, so that you can conveniently reach it in the light, and then turn it off before bedtime.
The connection diagram is quite simple: a phase is applied to the input of the switch, the input of another is connected to the chandelier wire.The second end of the chandelier is combined with the neutral wire, and the outputs N1 of both switches are interconnected in exactly the same way as N2.
The circuit works very simply: in case of switching any of the switches in an arbitrary order, the light will turn on and off.
Special attention should be paid to wiring. Modern requirements include the possibility of laying it at a distance of at least 15 cm from the ceiling. It is customary to lay cables in special boxes or trays, and combine the ends in a junction box. This version of execution has a lot of advantages, the main of which is the ease of replacing damaged wires.
In the mounting boxes, the wires are connected with special clamps. Twists are also possible, which must be soldered without fail and provided with reliable insulation.
How to connect loop-through switches from three points
If you want to provide remote control of lighting from three places at once, you need to supplement the circuit with a cross switch. Its main feature is that it switches two contacts at once, in connection with which it is equipped with two outputs and inputs. Connecting three switches is somewhat more complicated in comparison with the previous case, but in general, you can easily understand the principle of operation of this equipment.
To connect the lighting in this way, you need to perform several key procedures:
- Connect the neutral wire to one of the lamp cables.
- Connect a phase wire to the input terminal of one of the feedthrough switches.
- Connect a free lamp cable to the input terminal of the second switch.
- Connect the output contacts of the feedthrough to the two input contacts of the cross-over switch.
- Connect the output contacts of the second loop-through to the output contacts of the cross-over switch.
Using such a scheme in work, it is possible to equip a room with four or five points for adjusting lighting. In this case, it will be necessary to increase the number of additional cross-switches, as they should always be located between the passage.
Connecting a two-gang switch through passage
If there is a need to control the operation of several lamps from different points, you can use the two-key walk-through switches, but their connection is complicated by the presence of six contacts. The main thing in working with such equipment is to calculate common contacts.
The phase wire is fed to the inputs of each switch, while their other inputs will be connected to one of the ends of each lamp. The free ends of the fixtures will be connected to the neutral wire. Two outputs of one switch are combined with the outputs of the second, the remaining pairs of outputs are combined in the same way.
If you want to regulate the operation of two lamps simultaneously from three or four points, you need to use two cross switches. Each pair of walk-through outputs in this case is connected to a pair of cross-connects, and then the devices are combined so together, pair by pair.
If you thoroughly understand all the features of connecting walk-through switches, the procedure is very easy to repeat, especially when it comes to connecting single-key devices. When using two-key operation is an order of magnitude more complicated, as a larger number of switches and more wires are used. Moreover, such a scheme in itself is not so practical, but its cost is much higher.
Experts recommend using a circuit with two-key switches only if it is really necessary. In practice, they are more difficult to connect and ensure stable operation over time.
