When connecting a two-button switch, it is important to follow a number of recommendations that will allow you to avoid gross errors and unnecessary expenses for their elimination.
The most important nuances for all types of connection of two-button switches are:
- All electrical work is carried out with a mandatory disconnection of voltage. Therefore, before starting the connection, installation or commissioning tests, be sure to turn off the corresponding circuit breaker in the distribution board.
- The installation of the two-button switch is carried out in the back box. As a rule, all modern models are made of dielectric materials, although outdated metal ones can also be found. The box itself is fixed in the wall with putty, cement mortar, foam or other means.
- The wires connected to the two-button switch are stripped 10 - 20 mm from the edge. The lack of a cut can slip in the clamp, and the excess can create a threat of contact with adjacent wires. The insulation layer is removed with special pliers, in their absence, they are carefully cut off with a knife or nippers so as not to damage the core.
- The two-button switch is fixed by means of lugs, which are adjustable with screw clamps. The legs are pressed in until the structure becomes rigidly attached to the wall.
- After connecting the two-button switch, testing the correspondence of the buttons to the switched lighting equipment is performed. If a mistake is made, it can be corrected before finishing the finishing work.
Otherwise, the nuances of connection will differ, depending on the goals. Therefore, further we will consider several options for using two-button switches for solving household tasks.
2 light bulbs
One of the common connection options is to connect two lamps or luminaires to a circuit independently of each other. The connection diagram in this case will look like this (see Figure 1):
Phase conductor L is connected from the junction box to the two-button switch. From the terminals of the rocker switch, the phase conductor is fed separately to the socket of each light bulb. The neutral conductor N and the protective conductor PE from the junction box are fed directly to the individual socket and housing of each luminaire, as shown in the figure below:
On the chandelier
Many chandeliers contain three or more lamps in one piece. But, for domestic purposes, the work of all bulbs is not always required. Therefore, in order to save energy, they are divided into two groups and connected to different keys of the switch, as shown in the diagram below.
As in the previous case, from the junction box, the neutral conductor N and the protective conductor PE from the junction box are fed directly to the chandelier. The phase conductor L is connected to a two-button switch and from each of the terminals is supplied to a separate group of chandelier lighting. As a result of the connection, each chandelier holder must be connected in parallel to the network.
With socket in one box
In addition to the function of switching lighting devices in household premises, it is often required to connect any equipment using a plug. Therefore, sockets in the room are not superfluous, such a duet is used in garages, workshops and other premises, where they try to optimize the space and accommodate the maximum.
As you can see in Figure 4, from the junction box, the phase conductor L and the neutral conductor N are directly connected to the outlet. Then, from the phase outlet of the socket, the conductor is connected to the corresponding terminal of the two-button switch. The further procedure for connecting the supply and protective wires to the lighting equipment is similar to the previous diagrams.