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What gauge are the wires in standard NMRA 8-pin harnesses?

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What gauge are the wires in standard NMRA 8-pin harnesses?
Posted by passenger1955 on Sunday, February 11, 2018 5:53 PM

What gauge are the wires in standard NMRA 8-pin harnesses (like those old by TCS or SoundTraxx)?

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Posted by tstage on Sunday, February 11, 2018 6:19 PM

Generally, 30AWG.  Be sure to get the stranded wire that comes with the flexible insulation.  It's particular handy/advangeous for wiring the trucks, which need the flexibility for axle rotation.

Tom

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Posted by BigDaddy on Sunday, February 11, 2018 6:27 PM

The various mail order - retail DCC shops sell this wire in the correct size and correct colors.  For wiring a few engines, the multicolor pack is enough.  If you are the guy that posted that he has 311 engines, you will need the separate spools Big Smile of each color.

Is pricing better on Ebay or Amazon? Don't know, if I am ordering decoders from these shops, wire isn't going to add much to the total cost or the shipping.

 PS I'm not talking about Trainworld or Modeltrainstuff.  By DCC shops, I meant Tony's Trains, Streamlined Backshop and Lichtfield Station, in no particular order.

 

Henry

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Posted by richg1998 on Sunday, February 11, 2018 6:32 PM

I have used #30, 28 strand. More flexible than the usual 7 strand 30 for diesel pickups.

The wire I used was rubber covered, not vinyl covered which might be why it is more flexible.

Rich

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Posted by mbinsewi on Sunday, February 11, 2018 10:23 PM

So far, I've been buying the package of decoder wire that Digitrax offers.

It has 10' of each of the 9 colors, 30ga., for about $15, from my LHS.

Mike.

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Posted by woodone on Monday, February 12, 2018 7:45 AM

For N scale I have found that the wire from Digitrax too stiff for use between a steam loco and tender. The LokSound wire is much thinner and will flex better. The TCS wire is good too, but just a bit thicker.

If you need real good flex wire use the super flex wire from NWSL.

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Posted by DigitalGriffin on Monday, February 12, 2018 9:11 AM

I liked the 4 wire 28 Gauge ribbon miniatronics stuff.  But it can be pricey.

https://www.miniatronics.com/Merchant2/merchant.mvc?Screen=CTGY&Category_Code=7_3

If you want cheap and have the room Atlas makes a very nice 5 wire ribbon cable that's color coded and 20 gauge.  Because it's a ribbon it folds very nicely flat.  Sometimes with lots of loose wires you struggle to keep them all in place.

https://shop.atlasrr.com/p-4891-5-conductor-ribbon-wire-50-.aspx

If I'm wiring LEDs I'll use magnet wire because LEDs are very low current.

Don - Specializing in layout DC->DCC conversions

Modeling C&O transition era and steel industries There's Nothing Like Big Steam!

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Posted by BroadwayLion on Monday, February 12, 2018 10:21 AM

You want thin flexible wire?

 

You take it from an old mouse with a wire.

 

ROAR

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