Originally Posted by: avio 
Regarding the power...The power buss.. it is actually made only by what you suggest = a cable red and brown passing under the C truck and every 1 meter, going up and connected directly to the truck? or there is an actual sort of electrical box, amplifying the electrical power or a sort of similar item named ‘power buss’ that I have to create or get specifically for this task?
The termination / the end of this under truck double cable should connect back to the initial sourse / CS OR BOOSTER in order to create a ring of energy or the last part will be connected to the last meter of truck and terminate there??
Just ask all the questions you want to; if we have the answers, we will give them to you
There is no "magic box", the "power bus" is just cables, making sure the power goes all over the layout, without any losses.
Make sure that you look at the "B" and "0"-markings under the tracks; if you don't do this, you could end up making short-circuits, because "B" and "0" sits opposite in each end of the track pieces:
There are different views to the question about terminating the cables back to the initial source; I like to do it; but others find it better to terminate at the last track, so you don't make a complete loop.
I've tried to find drawings; but couldn't, so I will try to explain:
Option 1: You can make a "star"; where you have to two ( think red and brown ) block-connectors somewhere in the middle of the layout ( read: layout segment ) and from these two block-connectors you can pull a lot of wires to where you want them connected on the layout.
Option 2: You can run two wires under ( or near ) the tracks, and for every meter make a connection up to the "B" and "0"-lugs sitting under the tracks. The easiest thing to do is to run two "thick" wires as the bus under the tracks, and then from the bus up to the lugs on the tracks use a thinner wire.
Option 3: Now it gets complicadted to explain in writing.........
Imagine you take 10 pieces of track, 9 red wires of 1 meter and 9 brown wires of 1 meter.
Now you solder a red and a brown wire to track no. 1, and the other end of the wires you solder to track no. 2. Now, in THE OTHER END of track no. 2 you solder two new wires, and the other end of these two wires you solder to track no. 3. From THE OTHER END of track no. 3 you solder two new wires etc. etc. etc. You have now made something that looks like a "garland" ( guirlande
).
You can now use these pieces of track from the "garland" where it suits you on the layout. Of course, in your case, you have the layout already; but this solution can be much easier to manage on an already build layout like yours.
Option 4: Any combination of the 3 first options can be mixed, as long as you ALWAYS have red wires on the "B"-lugs and brown wires on the "0"-lugs. One mistake will make a short-circuit and finding that can be a big challenge........
Please ask again if I've confused you even more now.
Per.
P.S: Of course you can use other colors of wire; but do yourself the favor to use red and brown. Instead of different cable colors for the different segments of you layout, you can use a white paint-marker, and make small circles around the wires, one circle for segment 1, 2 circles for segment 2, etc.
