Identifying Phase and Neutral in a Socket with a Cheap Multimeter

Hello, I have a question, it's probably trivial, but I really have no idea ...
how to check with an ordinary, small, cheap meter in the socket where the output is phase and which is zero ??

If I start quickly moving something metal in one hole and hear that the loudspeaker crackles and the other does not crackle anymore, does it mean that the first is phase on the second zero?

I don't have radiators

Hello, I propose to buy a "sampler" a screwdriver with a lamp, after inserting it into the plus, the cost of this device is really small (about PLN 1). Regards

not sure just that now I wanted to test one more thing, and I will not buy the tester at 0.27

Then this patent with a speaker will be good but you can also try something like this: some device, e.g. a bulb, take one cable, put it in one hole and give the other to "zero", if it shines, we know that this hole is a plus and if it will not shine on any hole, it means that it has a new friend installations and zero is not connected with the minus: p with regards

You put one test lead into the socket and the other is in your hand. The meter on the voltmeter range starts to show something (depending on the humidity of the room) when you put it in phase. It is about 50-150V and when you put it to zero it shows nothing or very little. If you don't want to show off then you are leaning heavily against the wall or floor. If you are standing on a stool and want to measure in a lamp, the meter does not want to show ...

gsminfo wrote:

You put one test lead into the socket and the other is held in your hand [...]

Do that with an analog ("pointer") voltmeter ... and you won't write anything else here.

Venom007 wrote:

Then this patent with a speaker will be good but you can also try something like this: some device, e.g. a bulb, take one cable, put it in one hole and give the other to "zero", if it shines, we know that this hole is a plus and if it will not shine on any hole, it means that it has a new friend installations and zero is not connected with the minus: p with regards

What is this gibberish?
What's the zero and minus?

Gsminfo - maybe before giving such wise advice it is worth thinking about security three times? Because if you do not understand that your method can electrocute you, then your imagination is limited.

In the case of a three-wire installation, it is enough to measure the voltage with the meter taking the PE conductor (the protruding pin) as the reference point.

In a two-wire installation, you can try to connect the "hot" (red) meter cable, and the other "let it loose" (but God forbid). Some slight voltage will appear "on phase".

I have a stupid question. Whenever I wonder, I can't understand the concept of phase and zero. I do not understand why, after checking with a test tube in the cable, "phase" signals voltage if the circuit is not closed (after all, to close the circuit, you need to connect phase with zero with some load)
I do not understand why an electric shock occurs if we touch only one wire while standing on the ground? Where does the circuit close? if through the ground, why then the second "zero" wire?
Apart from the fact that it is possible that the voltage is only on one of the wires, if we imagine the generator, then on one of the wires, let's say for half a period, we have a positive half of the voltage, and for the second half of the period we have a negative half of the voltage on the other wire.
And as much as we want, the current will not flow from the voltage source if any one (of the two) only poles are connected to the ground, you have to close the circuit, i.e. the current will flow only when we short-circuit (load) both poles / cables of the source / voltage generator.
What is it all about? Where is my thinking error?

There are two wires in the socket, one called phase and the other called zero. And we call it so because it has zero potential with respect to the ground.
Because one end of the transformer is also connected to the ground
And maybe this text will explain some things to you at least a little