I pretty much knew that, though it was amusing. Probably more amusing in my head than it really was...@bnsf971 xD well my autocorrection did that, i mean a buswirebut for real. does someone in this forum operate his model railroad trough a buswire? iam still thinking of doing so. so i only have one main cable at the end and this will be plugged in the transformer. but iam not shure if this really works with all the connections on this one cable.
Anyway, it depends on what you mean by bus wire, and what you want to accomplish. Most instances of bus wire are for consistent power delivery. If that's all you want to do, then running feeders from a main heavy gauge wire is a good idea. If you want to control things other than trains, using a command station, through a bus wire, it depends on what you are controlling. Things can get complex quickly if you're trying to control turnouts using a DCC system, and using a bus wire system for those can go South fast. If you are operating, or want to operate, signals and turnouts, it would be a good idea to segregate that from the part that controls the trains.
It's also a really good idea to separate the track on a larger layout into what is referred to as "power districts", similar to block control on an older DC-only system. The reason for that is if there is a problem with a train or track, you can easily isolate the problem to one section of the layout. Then there are boosters, auto-reversing modules, and a host of other complications.
How far down the rabbit hole do you want to go?