Wojtasekowski wrote: ... can the electrical switchboard be installed in a recess covered with sliding doors (for a cabinet)
read maurica slowly and carefully. Until you understand
maurycy123 wrote: Where are they supposed to design them? Under the door?
Or maybe next to the door?
Access to the board is to be unhindered. This means not to block it or cover it, and also not to look for a ladder when there is a sudden need to suddenly turn off the voltage.
When you live to a ripe old age, you will understand the nonsense of such a location above the door, it is time to test RCDs. Maybe you will fall off the stool, pierce into what you are wearing on your neck and ask the question "what kind of sheep is this up to".
Maybe you should take part in sections and topics about which you have at least a vague idea.
For here you are a complete layman.