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I am starting wiring of a 38 by 27 layout where I plan to have 3 distributed TIUs so that per Barry's book the runs from the TIU output terminal blocks to the track blocks are not more than 30 feet.

In the book there seems to be reference that all TIU output terminal block runs should be the same length.

Does this mean that all my wire runs need to be 30 feet to operate well even though some connections will be near the TIU and would require a 4 foot run?

What is the best practice here for Wiring DCS?   I plan to add Legacy later but have been told to get DCS working first.

I appreciate everyone's thoughts and input.

Greg in Wisconsin.

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The preferred method for wiring DCS is the home run or star wiring method as described in Barry's book. The main goal of your wiring pattern should be to make your wire runs as short as possible. Also, make sure to follow Barry's recommendation to limit the number of track sections in each block to 5 or 6 on each side of your power feed.

The individual runs can be different lengths; however, the wire pair for each block should be the same length and close together (preferably twisted pair).

Last edited by johnf

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