Knickam
Hello to everyone.

Building a layout that will require 2, possibly 3 power busses as well as an accessory bus.
I am going to be twisting the wires for tall of the busses.

My question is would I be better
1. Running the busses around the whole layout powering pairs of tracks
2. Powering a section of the layout with each power bus powering all the tracks in that section.

Option 2 would reduce the amount of main bus wiring but is there a problem with trains changing continually from 1 power bus to another when travelling around the layout?

Also if option 1 is preferred, would the individual busses need to be physically separate from each other and if so by what distance? I am hoping to run them around the front edge of the layout so that connecting to the line monitoring modules is easier and more accessible.
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AHJAY
think north/south/east/west etc... not line by line.
No, there is no problem with trains chanign from one power district to another.

regards, Ahjay
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Tom G
When you state 2 or 3 power busses do you mean adding additional DCC boosters or dividing a DCC booster output into power districts using circuit breakers?
In either case keep the buss wiring from the booster to the farthest powered point as short as possible.  There are differing recommendations on twisting the pair of buss wires starting at 3 twists per foot (~30cm) for lengths over 30 feet or ~10 meters.
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AHJAY
The recommended twist is always 12 turns per metre. Same for any length of bus.

regards, Ahjay
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Knickam
Tom G wrote:
When you state 2 or 3 power busses do you mean adding additional DCC boosters or dividing a DCC booster output into power districts using circuit breakers?
In either case keep the buss wiring from the booster to the farthest powered point as short as possible.  There are differing recommendations on twisting the pair of buss wires starting at 3 twists per foot (~30cm) for lengths over 30 feet or ~10 meters.


Sorry for any confusion, It will be separate boosters for the power busses. On the advice from AHJAY the layout will roughly be divided into 3 blocks with the command station in the centre of one, the additional boosters in the centres of the other 2.
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Briperran
Knicham#

It can be a bit confusing.  You can create separate power districts withought boosters with circuit breakers. But you can also create seperate power districts with boosters. You will just find dependent on equipment they probably will be wired slightly differently.  The need for using a booster will depend on how many locos and accessories you are using or intend to use in future at once on your layout. For example if your command station only has a 2 amp output you will not be able to run a great deal of locos at once dependent on what they are small hornby peckets you could run quite a lot of but Heljan class 47 size locos you would be very limited.

Brian
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