Splice for small (~28 AWG) wires?

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November 20, 2012 9:37 AM

I have several light sets from after-Christmas purchases at Lowe’s, etc. These consist of two, three, or four light posts connected to a small battery container (3xAA) that also accepts a 3V wall wart.

 

I want to cut the wires from the lights to the battery box, run the wires through the layout, and connect them underneath to the power supply. But I do not want to solder these wires; instead, I would like to use a wire nut or other simple mechanical splice that can be easily undone if necessary.

 

The problem is that these wires are very small, I guess around 28 AWG, and I can’t find any splice connectors that work on them. (Also, striping the wires also is rather difficult, so an insulation displacement connector would be best.)

 

Any suggestions?

 

Thanks!

 

Alex

 

Happy O-Gauge Railroading!

 

See My Layout Under Construction Here

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November 20, 2012 10:35 AM

Try one of the large hardware stores like; Ace or Lowes or Home Depot in the electrical section for buying small wire nuts.

 

Lee F.

 

Philadelphia & Reading Railway, one of the first railroads in the USA, first to have a double track system in the USA.

 
 
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November 20, 2012 10:36 AM

These circuit board terminal blocks have a screw clamp and are best for very small wires.

 

wmsafe

Small wires are easily stripped the old fashioned way with pocket knife or thumbnail.  Diagonal cutters will also work.

 

Susan's Run Room http://www.slsprr.net/

 
 
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November 20, 2012 2:09 PM

Alex

 

I like the screw clamp solution.  If you can not find them, as Lee said purchase the smallest wire nuts for electronics. 

I had a similar situation and used the electronic wire nuts but wrapped small strips of bare wire (22gauge or smaller) around the wires to give it more bulk.

 

Good luck

 

Tony 9-8-2000

 
 
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November 21, 2012 8:53 AM

Strip wire a little longer & bend the strip end back over thus doubling the thickness of the wire.  A small blue or white wire nut will work

 

Ken

 
 
 
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November 21, 2012 9:08 AM

Hi Alex,

 

  Try this type of connector. it's called a suitcase connector, they come in all sizes

there is no splicing, just slip the wires in and close the case. Hope this helps.

 

Alex

trains 1994

 

HOME OF THE JADA RAILROAD

 

   

 
 
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November 25, 2012 12:31 PM

Some of the really small wire splicing, i.e. Telephone type wiring splice, 20, 22, 24 gauge and smaller, can be done with specialty telephone connectors. Note that these types of connectors are usually for solid wire. Most do not require insulation removal.  Insert the two wires, push the yellow cap down with side cutter/plyers  on the two wires. 

 

 
Last edited by Mike CT November 25, 2012 12:37 PM
 
 
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November 26, 2012 9:28 AM

Better for fine wires is the telephone "bean" style connectors.  You do have to strip the wires, but they make a very secure connection when crushed on to the wires, I've never had one fail.

 

 

TCA, North Penn O-Gaugers, MTH ASC Certified Technician

Super-Chuffer @ Henning's Trains

 

Nothing is so easy as the job you imagine someone else doing.

 
 
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November 27, 2012 9:58 AM

If you get to the point where this size of wire is used a lot, (example) Signaling system, low wattage application,  you may want to consider a Telephone punch down block and the appropriate punch down tool.  This block requires a 66 tool/cutter, there are other terminations requiring a 110 tool/cutter.   For One and Two splices/connections either of the connectors shown above does a very good job.

 

Solid terminal strip (4) connections per horizontal row. There are strips where the two left terminals are seperate from the two right terminal possibly requiring a bridge clip. Picture is telephone not train wiring.

 

Note that 28 gauge wire is small for telephone/com wire. Pictured is 24 gauge.  Installation with the correct tool requires no stripping of the insulation, the impact tool/s listed above also cut/s the wire once installed.  IMO an expensive tool.     

 

 
Last edited by Mike CT November 27, 2012 10:14 AM
 
 
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November 27, 2012 6:18 PM

One problem I am encountering is that most of the connectors will work with wire down to 24AWG, solid. The wires these lights have are stranded, five 0.004 wires, which is smaller than 28AWG, and are very difficult to handle. I have stripped them and twisted them together, and this may be as good as it gets.

 

Alex

 

Happy O-Gauge Railroading!

 

See My Layout Under Construction Here

OGR  forum member since 26 January 2008

 
 
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November 27, 2012 8:32 PM

Originally Posted by Ingeniero No1:

One problem I am encountering is that most of the connectors will work with wire down to 24AWG, solid. The wires these lights have are stranded, five 0.004 wires, which is smaller than 28AWG, and are very difficult to handle. I have stripped them and twisted them together, and this may be as good as it gets.  You could twist and then tin the very fine strands with solder, which might make it a bit more workable in a small mechanical connector.

 

Alex

 

 
 
 
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