Now, when the wires are laid out and all is prepared for the final crossing I can declare that electricity is easy. It took us (an electrician and me) 3 days of work (8h each). The most difficult part is drilling holes in the traditional bricks and mounting the electrical boxes. Doing the same in YTONG walls is a piece of cake.
As to how and what has been done - the setup is as in the rest of my house. All the wires are pulled down to the floor. All wires are concentrated into bundles and a broad 'river' leads to the junction cabinet. The sockets are powered with a YDYp 3x2.5 wires. The wall switches with UTP. The lights with YDYp 3x1.5. The Blinds with YDYp 4x1.5.
A few words about the junction cabinet. I expect to fit there the electrical protection modules, relays and LSA (KRONE) modules. The PLC stays in the basement in the main cabinet. I have considered the need for using a 2nd PLC to have a redundancy, but I ended up deciding that it would be too much. I laid down a thick bundle of 12 UTP wires from the basement to the attic level for future communication. "Communication" is too big a word for what we need. It is just about sending simple impulses.
I have searched for a way to mount the KRONE modules in the cabinet. Back in the basement I invested a lot of time into cutting a piece of metal and drilling holes. This time I decided to attach the KRONE modules directly to the DIN rails. A photo below shows how it was done.
I chose the ABB 96 module U42 cabinet. It surprised me positively with its high quality and what was inside. No shortcuts. A stable construction and a set of handy plug-in boards for neutral and protection wires.
If this is the first time you see such a cabinet you might be confused by the number of wires. Do not worry. What you see is a 'light' version. It is just for 3 rooms, a bathroom and a lobby. A full house has external lights, door bells, more rooms, and the kitchen. They make up for a big portion of additional wires.
The plan for the components in the cabinet is as follows: The lowest level for the LSA modules. The relays 1 level higher. Then the electrical protections. The top level as a reserve for the switch or any additional devices.
It might be that I am slightly skewed, but wiring a cabinet is a pure pleasure for me. I let's me unwind and gives a lot of satisfaction. I am happy when I can arrange it all from scratch and make a new order.
The photos below show the stages of my work.
The 3rd photo shows clearly that the cabinet could be much smaller for the needs. In fact I use only a half of the available space. The error in my calculation came from the expectation that the recuperator will need a 3-phase power. That would mean a larger switch and a 7-module wide power meter. I ended up with a single-phase B16 protection and 1-module with meter. At the end of the day I am not worried about the redundant space. During the last 6 years I have added a numerous bits and pieces to the main cabinet and all the extra space found some use.
So, how does it all work? Great! I needed a few minutes to modify the code and here it is! My attic has become a part of the rest of my 'intelligent' installation.