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WoodSpinner
05-28-2012, 10:20 AM
Hi, I found some 2 lead 24g stranded and shielded wire for home and limit switches at radio shack(microphone cable).

I'd like to go with some 6 or 8 wire 20g shielded for my motors but I'm having a heck of a time finding it, any suggestions?

John

OCNC
05-28-2012, 10:29 AM
Unless you're using unipolar drivers you should be able to use 4-wire shielded cable. 22 guage wire (it's rated at 7 amps) should be sufficient unless your motors are huge.

Chris

ger21
05-28-2012, 10:57 AM
If you can get away with 4 wires, try McMaster-Carr 7673K41

You can buy directly from Igus.

WoodSpinner
05-28-2012, 10:58 AM
Unless you're using unipolar drivers you should be able to use 4-wire shielded cable. 22 guage wire (it's rated at 7 amps) should be sufficient unless your motors are huge.

Chris

Hi, thanks for the response. I should have added that I'm using a hobby cnc pro chopper driver which I believe is a unipolar driver. I'm currently running 6 wires at 22g but its solid core, I'm switching to a mobile gantry style machine and am concerned about the possibility of breaking one of them and at the same time wanted to go with a larger/shielded cable as an upgrade to my existing electronics

I didnt realize that 22g would have that capacity. I guess it was just my desire to over engineer the system. At that capacity its already there.

John

ger21
05-28-2012, 11:05 AM
You really shouldn't need shielded wire for your steppers. McMaster #7673K54 should work

WoodSpinner
05-28-2012, 11:20 AM
You really shouldn't need shielded wire for your steppers. McMaster #7673K54 should work

Thank you ger21

John

Wombilly
05-28-2012, 12:36 PM
Always use shielded cables for your motors but only connect the screen at one end, EMF noise induced into the system can make it unstable. consider looking CNC Community: SINUMERIK CNC4you - Siemens (http://www.cnc4you.com),