Oke. How does the linking to other object work? Because linking to Power Consumer doesn't work. Can you help troubleshoot.

What I done is creating a new switch object. Then created two Power Consumer object with title PSU1 and PSU2. The I checked the documentation for Cabling import module https://kb.i-doit.com/display/en/Cable+patches+and+paths
For information the power-object is the first object in my CSV and the switch is de last object in my object. So >
PowerUnit1;Outletxx;CableXX;PSU1;Switch;PSU1
PowerUnit2;Outletxx;CableXX;PSU2;Switch;PSU2

Then after importing this was the result.