To your attention, already the 68th question, with just such a title, was asked by the reader Arman. If you have your own answer to the question, then write it in the comments below. I and other readers of my channel will be happy to read it.
The text of the question itself read literally as follows:
I have a 220 V. Everything is fine with him. I plug in the socket - immediately the machine knocks out. What could be the problem? I looked with the outlet - the phase-zero is not connected together with each other and does not ring.
I addressed the issue and advised Arman within the framework of my knowledge and qualifications as follows:
To understand the real reason for the tripping of the circuit breaker, you need to see the wiring diagram. And it’s not completely clear how you connect a power outlet to a circuit breaker - do you have a wire hanging from the wall somewhere, and you connect a power outlet to it?
Or we are talking about a device, the plug of which you plug into a power outlet, then the reason may lie in the device itself or the power cord. Accordingly, in the second case, you need to ring the connected electrical device and its elements for a short circuit.
At the same time, there is a possibility of short-circuiting the phase conductor to the protective conductor through this very plug socket. In addition to a short circuit between the phase conductor and the neutral conductor, the phase conductor can just as well contact the protective conductor in the socket outlet or communicate with frame parts that should normally be to ground.
The circuit breaker does not care what short-circuit current to react to, so it will trip even if the insulation between the phase conductor and the neutral conductor is intact. This situation is typical for a three-wire power supply system.
It is also possible that, with a working circuit breaker and a working plug socket, you have connected too much load. However, the circuit breaker must be tripped after some time.