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Old 04-05-2014, 07:54 AM   #1
stevew
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Default Wire gauges - confirmation please

This week I'm going to buy the wire I need for my new layout and it would be great if someone could please confirm that the following wire gauges would be ok for DC & N gauge locos.

Power Bus - 12g (x4, 1 per controller/track oval)
Power Feeders - 18 or 20g
Accessories - 14g
CDU/Point Motors (Peco) - 12g

Thanks in advance.
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Old 04-05-2014, 01:14 PM   #2
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Hi
Is the wire gauge used AWG? If so 12AWG is a bit large for dc track feeds.
My conversions charts make 12AWG roughly equal to about 3.0mm2
Unless you're sending the dc track supplies over a long distance 1.0mm2 would be adequate which is about 17AWG.
20AWG is approx 0.5mm2 and would be ideal for droppers from the rails
Accessories... What are these to be? 14AWG is around 2.1mm2 which is quite large.
Solenoid Point motors always use the largest possible wire size that you can connect to the motor and switch .

Remember, you can't have too larger wire but you can easily use too smaller one and end up with problems!
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Old 05-05-2014, 02:56 AM   #3
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Thanks Flashbang.

I'll use the following or larger depending on price and availability.

Power bus - 17 AWG (1.0mm2)
Power Feeders - 20 AWG (0.5mm2)
Accessories - 17 AWG (1.0mm2) - nothing specific, mainly led lighting.
CDU/Point Motors - As big as I can solder. I'll measure the tabs on the toggle switches.
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Old 05-05-2014, 10:20 AM   #4
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This comes up often can we make the definite answer sticky plz
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Old 05-05-2014, 11:39 AM   #5
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Quote:
Originally Posted by Dysonsphere View Post
This comes up often can we make the definite answer sticky plz
Done, now a sticky
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Old 12-05-2014, 05:18 PM   #6
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Smile Wire language

Can somebody translate the AWG's and the mm into 7/0.2 16/0.2 24/0.2 and 32/0.2 which is what I use ... call me weird but .....
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Old 12-05-2014, 05:29 PM   #7
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Hi
If you scroll down a little on this linked page you will find a conversion chart......link to item
But to save you looking ...
7/0.2mm is approx 24AWG
16/0.2mm is approx 20AWG
32/0.2mm is approx 17AWG
50/0.2mm is approx 13AWG
Note these have to be approximate as there isn't an exact AWG to mm.
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Old 08-12-2014, 09:36 AM   #8
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Default Solenoid motor wire

I've been using some wire rescued from earlier projects but now need to buy some more, mostly for wiring solenoid point motors. I'm looking at the Maplin 7 0.2m equipment wire as it comes in a decent range of colours - can someone confirm if this would do? Longest length from decoder to point would be about 1 meter. Any other suggestions on sizes/suppliers welcome.
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Old 08-12-2014, 09:51 AM   #9
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Hi
I recommended that the minimum wire size for solenoid point motors be 16/0.2mm equipment wire. Shorter runs and you may get away with the smaller 7/0.2mm, but I always recommend 16/0.2 as it will give the best operational performance. You can of course go even larger in wire size without issues.
Remember, you can never have too larger wire size but too small can lead to problems.
If you do use the 7/0.2 and get occasional failure to throw issues, then simply double up all three wires to each of the motors.
For supplies try Brimal, Bitsbox, Rapid or even ebay all of which will normally be considerably cheaper than Maplin.
Brimal
Bitsbox
Rapid
eBay
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Old 08-12-2014, 12:00 PM   #10
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Quote:
Originally Posted by Flashbang View Post
Hi
I recommended that the minimum wire size for solenoid point motors be 16/0.2mm equipment wire. Shorter runs and you may get away with the smaller 7/0.2mm, but I always recommend 16/0.2 as it will give the best operational performance. You can of course go even larger in wire size without issues.
Remember, you can never have too larger wire size but too small can lead to problems.
If you do use the 7/0.2 and get occasional failure to throw issues, then simply double up all three wires to each of the motors.
For supplies try Brimal, Bitsbox, Rapid or even ebay all of which will normally be considerably cheaper than Maplin.
Brimal
Bitsbox
Rapid
eBay
Thanks FB (Apparently I have to enter minimum of 10 characters so please ignore everything within these brackets )
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