The light switch is a simple mechanical device, the main function of which is to control the lighting, the principle of operation is to close and open the electrical circuit on the way to the lamp. To properly make the wiring for it, you need to understand the principle of operation and circuit breakers.
First, let’s consider the connection diagram of a single-circuit breaker.This is the only true option to connect the switch, supply the phase to the lamp, and zero is allowed through the switch is prohibited. After all, when used in a circuit breaker with a break of the zero wire, the entire wiring remains energized, even when the light is off.
During the replacement of the bulb in the lamp, accidental contact with the contacts under voltage or when touching the conductive housing, the breakdown of the wire insulation, in the absence of grounding of the device, a person may be affected by electric current.
How To Make Two-button switch?
Two-button switch is used to control two groups of lighting, such as a pair of different lamps, or one lamp includes several lamps, in this case, one key is responsible for one part of the lamps.
The other for the other, respectively, when you turn on both keys at once, the lamp will burn all, and when you turn off one of the buttons, will burn only part of the lamps, which makes the lighting control process more flexible, helps to save energy.
Practice shows that the wiring of the lighting line it is better to divide with the power, in case of an accident will not completely de-energization of the apartment. If there is a malfunction in the lighting network, the table lamp included in the conventional network will not go out and expensive electrical appliances will not be damaged.