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28 awg vs. 30-32 awg

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  • Member since
    January 2009
  • 59 posts
28 awg vs. 30-32 awg
Posted by eds-trains on Thursday, March 26, 2015 10:35 AM

I am attempting installation of a Soundtraxx sound decoder in a Bachmann GP7.

The bill of materials call for 30-32 gauage wire. I have shopped around and the smallest I can find is 28 gauage wire from Radio Shack.

How important is it to use the 30-32 gauage wire for this job?

Thanks for your help

Ed

Ed
  • Member since
    February 2002
  • From: Reading, PA
  • 30,002 posts
Posted by rrinker on Thursday, March 26, 2015 10:43 AM

You can buy decoder wire from various model sources, most of the decoder makers sell it, for example. The reason for the specified wire is that decoder wire is smaller, and generally more felxible, which is usually important in a decoder install. If it fits, there is no harm in using larger size wire.

 After a few installs, you usually end up with leftover bits of wire cut off from teh harnesses of the decoders you've installed.

                   --Randy


Modeling the Reading Railroad in the 1950's

 

Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.

  • Member since
    January 2009
  • 59 posts
Posted by eds-trains on Thursday, March 26, 2015 10:57 AM

Thanks Randy and thanks for not mentioning my incorrect spelling. 

Ed
  • Member since
    July 2006
  • From: North Dakota
  • 9,592 posts
Posted by BroadwayLion on Thursday, March 26, 2015 11:10 AM

You already have the smaller wire ready at hand. (Assuming that you do not have a wireless mouse). Certainly you have dozens of dead mice in a box near your train room. Cut off the mouse and the plug, slit open the cable and there are all the wires that you need. No need to spend big bucks in the store.

ROAR

The Route of the Broadway Lion The Largest Subway Layout in North Dakota.

Here there be cats.                                LIONS with CAMERAS

  • Member since
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  • From: Bakersfield, CA 93308
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Posted by RR_Mel on Thursday, March 26, 2015 11:28 AM

Using wire form an old mouse would work great!  If you don't have an old mouse I buy my wire from TCS.
 
Mel
  • Member since
    July 2003
  • From: Sierra Vista, Arizona
  • 13,757 posts
Posted by cacole on Thursday, March 26, 2015 11:31 AM

Any old LAN, computer printer, or serial cables laying around?  Slit open the jacket and you have all kinds of very small gauge, flexible wire that can be used for decoder installations.

If you purchase a decoder such as the NCE D13SRJ, it will have a wiring harness in the package with wires long enough that you can cut off most of them.  I save this wire when I install a decoder, and keep all the leftovers in a glass jar.

 

  • Member since
    February 2005
  • From: Southwest US
  • 12,914 posts
Posted by tomikawaTT on Thursday, March 26, 2015 11:59 AM

As a rule of thumb, if the AWG number you have is lower than the specified number, the number you have will have ample capacity.  #28 AWG wire has about four times the current capacity of #32AWG wire, so then the limitation becomes one of stuffing a rope into a place designed for a string.

Chuck (Modeling Central Japan in September, 1964)

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