Thanks everyone,
of course I know there might be a security issue.
I apologize for the misunderstanding, I took part of the diagram and quickly added a connection just to make my question clear.

ps : I hope we've answered your question, which isn't easy to explain why we've put this in the code. I also hope we haven't offended you or questioned your skills as an electrician, that wasn't the point, if it was I apologise in advance.

Thanks Laurent, no problem and no offense. I was wrong to post an example by modifying that part of the diagram.

Hello everyone,
I'm probably taking the wrong approach.
I have problems with the properties of the wires. When I have multiple wires of different sections starting from a terminal, if I set the properties of a wire these are also assigned to all the other wires.
The name, voltage, etc, obviously must be the same but the section could be different.
I saw the "Apply properties to all conductors of this potential" flag but if I uncheck it, change the properties and enter it again it is enabled again (tried with 0.100.0-dev and 0.90).

Am I doing something wrong?

I attach an example.

Thank you.