Electrical Cabinet Placement
Depending on space requirements and availability, you can install everything in a central consumer unit or split it up over sub-consumer units. Normally, it is advantageous to combine the cellar, ground floor and outdoors area in a single consumer unit and put the electronics for the first floor in a smaller sub-consumer unit on the first floor. Using sub-consumer units reduces the length of cables and thus substantially reduces the cabling effort and simplifies the feeding in of cables.
You will need a bus extension module for every sub-consumer unit to connect the evon Smart Home modules to one another. You also need a bus extension module (Sys 1200) each time you start a new row within a consumer unit.
A separate 24 V supply is not always required for a sub-consumer unit. If the power is sufficient, you can route the supply from a previous unit.
Ensure that the GND connection of all power supplies is connected with the protected earth connection (PE).
Since the bedroom is on the first floor, we will use a sub-consumer unit. The power supply and the evon Smart Home controller are placed into the main consumer unit and the bus extension and the module for the bedroom in the sub-consumer unit. Both consumer units are connected to each other with the bus cable (CAT5) and the 24V power supply cable.