This one can be tricky and I can tell you from the first look. It depends on how complex your final scene should be.Do you plan to match your initial Generator to some Surface later?
Then, this could be a quite complicated setup.
You should have different Spline to drive `sl_bügel` Segment. This Spline could also be used do generate `sl_draht` Segment as well.
Since 3DSMAX is not my primary modeling software and I do not know much about Spline editing I'll try to make some initial setup.
I hope in meantime Itoo guys will jump in and as usual solve this with simplicity and elegance
But main question remanin: Do you plan to match your initial Generator to some Surface later?