I have come into a decent supply of 24 awg / 6 conductor shielded cable. My steppers are 3amp/ph. Can I get away with using this? It has always been my understanding that amp ratings on wire is very conservative so that it should be ok. Opinions?
Thread: Using 24 awg/ 6 conductor cable
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10-03-2006, 01:20 PM #1
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Using 24 awg/ 6 conductor cable
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10-03-2006, 09:22 PM #2
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24 gage wire is more suited for signal or control wire, not current conducting wire.
Yes, wire is conservatively rate BUT that is to prevent voltage drop while conducting current over longer runs. You can create problems to see how SMALL of a wire you can get away with, especially if you pull more than 3 amps during a fast jog or acceleration move. Then again, don't complain if you run small wire and start losing steps for no apparent reason.
Can you get "away with it"? Probably.
BUT you may be more satisfied if you used 18-3 or 18-4 or something a bit more robust to carry power to the motors.
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10-04-2006, 01:39 AM #3
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Luckeycnc,
Should not be a problem since many stepper manufacturer's factory cables are 22 awg 8 conductor for this current range.
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10-05-2006, 01:53 PM #4
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The length of the wire is EXTREMELY important, due to power loss. That Gauge should be ok for short runs.
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10-05-2006, 02:07 PM #5
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Read and choose as you see fit:
What gage wire to use:
http://www.cnczone.com/forums/showthread.php?t=17350
http://www.cnczone.com/forums/showth...480#post136480
Wiring practices:
http://www.a-m-c.com/download/docume...gpractices.pdf
Keep in mind that the smaller the wire and the longer the length and the more current you try to draw thru it, the more voltage drop you will have.
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