New construction - what electrical work am I allowed to do myself as a professional?

Hello, so a friend of mine wants to build a new house this year and is having everything done by individual companies. Now he asked me, since I am a skilled worker in electrical engineering, if I would do the installation. But now the question arises what am I even allowed to do, an electrical company would do the acceptance, but for example I am not allowed to do the fuse box, right?

Best regards, ronny

Hello,

An electrical company would take it on, but I am not allowed to do the fuse box, am I?

You are allowed to prepare everything, including the fuse box. However, only the master electrician may connect to the supply line leading into the house.

Kind regards

So, am I allowed to connect all the sockets and also the distribution completely?, except for the supply line and meter?

Best regards, Ronny