RE: [CAD_CAM_EDM_DRO] wire for motor ?

A good wire chart is here:
http://www.powerstream.com/Wire_Size.htm

28 Gage's limit is about 1.4 Amps -- you need to go to 24 Gage to handle 3.5
Amps and even then, I would bump it up to 16 as you will probably be using
stranded wire (less ampacity) and this gives you a nice buffer against
surges and overloads. You want the fuze to blow, not your cable.

Any electronic place will sell you a nice braided plastic sleeve that you
can slip your wires through to make a neat cable. Alternately, you can buy
50 feet of some multi-conductor and roll your own.

Dave

> -----Original Message-----
> From: CAD_CAM_EDM_DRO@yahoogroups.com
> [mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of turbulatordude
> Sent: Sunday, December 10, 2006 8:56 AM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: [CAD_CAM_EDM_DRO] wire for motor ?
>
>
> Hi all,
>
> I used a db9 connector for an connector on my SLA7062 driver. I hope
> to use 34 volts and up to 3 amps.
>
> I was hoping to also use a store bought db9 cable. Unfortunatly,
> they seem to not have any wire ga listed (wadda-ya want for $1.99)
> but it seems that 28ga is common.
>
> The question is about wire rating.
>
> how do you rate wire when using a stepper that has a chopper or PWM
> circuit ?
>
> If the motor is 3 volts and 3 amps, is the total wire wattage
> 9 watts ?
>
> Dave
>
>
>
>
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