We could immediately show you how to connect and assemble the circuit breaker on the example, as we did when replacing the electrical outlet, but we came to the conclusion that this is not the right path. The right way consists of two elements:
- 80% thinking, that is, we answer the questions about what we actually want to do and how to do it
20% of physical work
It would be perfect if it was always like that. But wait a minute! This is not an article about philosophy and the approach to performing tasks, right? That’s right, but I’m not going to let it go and I’ll answer the question first. The electrician residential can help you out now.
What and how do we want to do?
- We want to connect the light switch, right?
- And how does it look on the schematic?
This is the simplest scheme possible. In order for the standard lamp supplied with 230V voltage to be illuminated, it is necessary to connect two wires: phase (L) and neutral (N).
When the electric circuit is not interrupted, and there is electric potential on the phase conductor, the current flows through the bulb, so the bulb will light up. The light switch is designed to open or close the electric circuit to turn off or turn on the light bulb. In addition, a protective conductor should be connected to the protective terminal in the lamp in order to equalize the potential of the lamp housing with the ground potential. It is a protection against electric shock, for example when the housing of a damaged lamp is touched.
Or maybe a diagram that is closer to reality?
What’s happening here? In total, not much more than the previous scheme. A 3-wire power cord is supplied to the electrical box:
- brown wire – phase conductor
- blue wire – neutral conductor
- vein yellow-green – protective conductor (more about the colors of the wires we write here )
An additional cable is routed from the electrical box to the lamp. As we have already determined, the light switch has the task to break the circuit in only one place and this place, in principle the phase wire is an element. We connect the neutral wires with the use of electrical connectors in the box outside the switch. We do the same with protective conductors.
If you make a mistake and instead of a phase conductor, connect the neutral wire to the circuit breaker (and the phase conductors will stick on the electrical connector), everything will be in the best order from the functional point of the circuit breaker it will light or extinguish the bulb. However, a problem will arise that despite the switched off light bulb, the electrical potential will be brought to the non-stop lamp. This creates an additional risk of electric shock if you want to replace the lamp when the lighting is off and only the theoretical lack of voltage on the wires at the lamp.
