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 You can split the power of your brick or transformer into to go into 2 or more channels depending on what you are running. Freight draws less current than passenger cars. Smoke units can draw 1 amp or more when turned on. Most modern engines draw less than 2 amps. The dividing of blocks for each channel can vary as far as feet. A lot of variables. It can be just what your using as far as wire. Just do a test for signal strength. When the track signal goes south of 10. You probably have to much track on that one channel.

Raiderofcoffins posted:

So every 10-12 pieces of fastrack is one leg of a 180 transformer?

Both legs (power & common) per recommended DCS wiring guide, DCS Companion. Also don't forget to isolate the center rail for each block. You can have multiple blocks fed by a single transformer. See post above from Dave C.

FWIW, I used OGR wire, #14 to MTH terminal block, #16 to track blocks from the terminal blocks. OGR wire is good, all copper wire.

Assuming the following:

  • A current production, Rev. L TIU
  • Track blocks consisting of 11 separate track sections
  • Each each track section is 3' long resulting in 33' blocks
  • There are 24 track blocks on each TIU channel.

One TIU channel can support 11 X 3 X 24 = 792 feet of track.

Therefore, one TIU with 4 channels in use can support 792 X 4 = 3,168 feet of track. However, this should be considered a maximum value, since typically:

  • Track sections won't all be 3' long (switch tracks, curved sections, operating tracks, etc.)
  • Some blocks will have less than 11 track sections
  • Not all TIU channels will have 24 blocks.

Loose or corroded track connections, as well as dirty wheels, track or pickup rollers, will also work to lower the number of feet of track a TIU can support.


DCS Book CoverThis and a whole lot more is all in “The DCS Companion 3rd Edition!"

This book is available from many fine OGR advertisers and forum sponsors, or as an eBook or a printed book at OGR’s web store!

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