Stepper Wire ?

CNC Crew:

I am boldly progressing where I've never been before, but slowly. I now
have steppers attached via 2:1 timing belts to the X and Y axes of my
mill. Now I need to wire them up.

Does anyone have a source (preferably on-line) for shielded wiring?

Also, if anyone has thoughts on my scheme below please let me know. :-)

I'm using Camtronic 5A drivers. Dan says the plugs on these boards are for
18 AWG wires for the motor windings and 22 AWG for control. I'm planning
on using one cable to each motor (15'-20' run) of two 18 gage twisted
shielded pair. Also a cable of one 22 gage shielded twisted pair for each
of, one home, and two limit switches on each axis. That would be four
cables for each axis with each terminating at the motor or one of the three
switches.

I have a small opto-isolation circuit which is probably best right at the
computer parallel port? One side powered from the computer and the other
from the 5V supply in the driver box. This isolation circuit is to be
connected to the driver box via a D-Sub 25 pin extension cable. I think
these have all 25 conductors through and are paired & twisted where some
cables are not?

Then, inside a Sescom enclosure, use the 22 AWG twisted shielded pair cable
for 5V supply, step & direction signals. I can use some of the 18 gage
double twisted pair to get motor winding power out of the box. But then
should the 120V AC and higher DC power be in shielded cable? If so I could
run them in a cable of one 18 gage twisted pair.

If this seems OK, then I can use close to 100' of the 18 gage dual twisted
pair, and 100' of 22 gage single twisted pair. However only 10' or 20' of
single pair 18 gage. I suspect I can't buy less than 50' or 100'
spools. Anyone have a spool and wants to sell 20'? Or maybe a couple of
people to go in on part of a 100' spool?

Thank you for your help.

Hugh Currin
Klamath Falls, OR