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My layout is as shown in the attached pic, and is:
     9'-5" across the Top Horizontal leg
   12'-8" down the Right Vertical leg.

My wire runs will be 8 ft at the longest, and will all run from local Euro Style terminal blocks back to ganged Euro Style terminal blocks near the Power/Control area at the inside corner.

Below, I have listed the proposed wire sises that I plan to use.
You will see 18 AWG listed for the DZ 1000 Switch Machine extenders and and non-derailing drops, as well as for the controller extenders.

Question 1) Would it be electrically sound to use 20 AWG for these all SW Machine and Controller extenders and non-derailing drops?

Question 2) Would it be OK to drop back to 18 AWG wires between the transformers and near terminal blocks, leading up to the longer runs or should 14 AWG be used all the way from the transformers to the local drops terminal blocks?

Any and all comments and/or suggestions would be much appreciated.

Thanks,

Material:
    Terminal blocks - Euro Style, 12 position

    Power Drops – 18 Gage, 2 conductor, Wire, Stranded (Red/Black) (Separated)
    Power Runs – 14 Gage, 2 conductor, Wire, Stranded (Red/Black) (Left as cable)

    DZ 1000 SW. Machine Drops – 18 Gage 3 conductor Wire, Stranded (White/Green/Red) (Separated)
    DZ 1000 SW. Machine Runs – 18 Gage, 3 conductor Wire, Stranded (White/Green/Red) (Left as cable)

    DZ 100 Drops Controller Drops – 18 Gage 3 conductor Thermostat Wire, Stranded (White/Green/Black) (Separated)
    DZ 100 Drops Controller Runs – 18 Gage 3 conductor Thermostat Wire, Stranded (White/Green/Black) (Left as cable)

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Images (2)
  • Rogers New Train Layout 3-9-2020
  • Single L and Small Oval Top View
Last edited by RWL
Original Post

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Mostly, I am wondering if I could, safely, use 20 gauge rather than 18 gauge t the DZ 1000 switch machine, non-derailing, and controller drops for two reasons:

1) I have read that the drops from the DZ1000's switch machine and controller drops are 26 gauge, and I would think it would be easier to solder 20 gauge extenders to those thin wires rather that 18 gauge.

2) For the non-derailing drops, I would rather solder 20 gauge rather than 18 gauge to the track for those connections.

Last edited by RWL

Thanks Bruce,

Do you run 24 gauge all the way thru, or just to the first terminal block?
The reason that I am asking is that Steve, over at RCS recommends 18 gauge wire, but not sure if he meant for the longer runs only, or for the drops as well. It would seems like a bit of over kill, especially at the drops.

BTW, what size do you use for your power drops?

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OGR Publishing, Inc., 1310 Eastside Centre Ct, Ste 6, Mountain Home, AR 72653
800-980-OGRR (6477)
www.ogaugerr.com

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