Approval of electrical installation by the master?

You can also inquire at the local electronics dealer if he can get someone for a payment. That is quite common...

Hello, we did it similarly to how you want to do it: We got offers from various electrical companies for: Installing the meter box including basic equipment (3 circuits, RCD etc.), wiring up to the connection... and done All other house wiring was done by ourselves, we got the materials from the wholesaler and had them delivered on a pallet to our garage Cost (including VAT for the official part of the electrician) about 4300 euros for the meter box (single-family house, 2 meter slots for possible photovoltaic) wiring to the house connection including material + 500 euros final acceptance We had to search a little until we found an electrician who does the basic electrical work + acceptance, but price-wise it was definitely worth it with the own work.

the right way would be: before starting with the electrical installation, first contact a master, discuss the system together. because then the master will have an easier time confirming the correct function