Hi
At the beginning I will write that I am green on the subject of electrics / electronics, but I need to hook up, and at the output to have 230v.
I know there are small switchboards to buy that would do the trick.
But why overpay over PLN 100 if it is possible to make an adapter out of the available materials?
I have a 3-wire external cable to which a 230V socket is already mounted.
Can I install a 4p plug to the other end of the cable?
According to this scheme:
So L3 would not be connected to anything.
The question may be stupid for someone who knows each other, but will such "extension" work and is it safe?
At the beginning I will write that I am green on the subject of electrics / electronics, but I need to hook up, and at the output to have 230v.
I know there are small switchboards to buy that would do the trick.

But why overpay over PLN 100 if it is possible to make an adapter out of the available materials?
I have a 3-wire external cable to which a 230V socket is already mounted.

Can I install a 4p plug to the other end of the cable?

According to this scheme:

So L3 would not be connected to anything.
The question may be stupid for someone who knows each other, but will such "extension" work and is it safe?