[Lab] Buying copper wire

[Tom Burns]

I was off on my AWG requirements, not doing anything crazy - I just took
molex size as AWG which I now see would be a mistake :)

I've used speaker wire a bit, but it's usually a bit too thick for my uses.

Andrew, I'm super interested and will contact you off list.  Thanks!

Thanks everyone for your suggestions (and the big correction, lol :) )

On Monday, May 18, 2015, Dave Hunt <dave at huntgang.com> wrote:

> I have used speaker wire and even cheap dollar store extension cords cut
> up for the wire.   For thinner guage requirements, I often default to
> cutting up old network cables.
> On May 18, 2015 1:20 AM, "Ken McKinnon" <klmckinnon at rogers.com> wrote:
>
>>  I shoould also mention the connectors and pins play a huge role in
>> choice.
>> from http://www.molex.com/catalog/web_catalog/pdfs/C.pdf
>> for Molex .100", no pin carries more than 3 Amps, so using anything below
>> 20 AWg for moderate runs is a waste of copper.
>>
>> Ken
>>
>> -------- Forwarded Message --------  Subject: Re: [Lab] Buying copper
>> wire  Date: Mon, 18 May 2015 07:14:11 +0200  From: Ken McKinnon
>> <klmckinnon at rogers.com>  To: lab at artengine.ca
>>
>> That's some pretty hefty stuff, capable of carrying high currents, and
>> consequently tougher to handle, needing heavier gauge tools to work.
>> Normally hobbiests live above the 18AWG - 30AWG side of things.  For
>> stranded wire of that size, you can likely get some at either the Home
>> Depot like or electrical shops (Westburne).  7AWG is an unusual size
>> (commercially available), you may have to move to 6 or 8 depending on
>> requirements.
>>
>> Just out of curiosity, how much current are you intending on driving as
>> ultimitely that is the factor that guages size (current and line voltage
>> loss (i.e. I2R) over the run)
>> Given your pin sizes (.100" and .156"), you will have maximum wire AWG
>> that you can use.
>> http://www.engineeringtoolbox.com/awg-wire-gauge-d_731.html  will
>> convert AWG to mm2, but to get to your pin size you would need to do some
>> conversions.
>>
>> Ken
>>
>> On 2015-05-17 11:48 PM, Tom Burns wrote:
>>
>> Hi,
>>
>>    I'm sick of using high gauge ribbon cable for wiring between circuit
>> boards and potentiometers, and similar low-power applications.  Especially
>> because this 909 clone I'm building has a bunch of 0.1" and 0.156" molex
>> connectors I need to crimp.
>>
>>    Where should I go to buy ~30' of multistrand copper wire?  Probably
>> want 10AWG, 14AWG, 7AWG.
>>
>>    Digikey links, or local suggestions would be great.
>>
>>  Thanks in advance!
>>
>>  Tom
>>
>>
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