Thread: Cable Size ?

  1. #1
    Hi everyone.

    I have nearly finished wiring my first CNC control cabinet, I have used 7/0.2 cable for the 5 volt supply, but when I came to wiring up the Motors (I have 3 Nema 23's) I had a thought, the voltage is higher (36 volt) so what size cable do i need for the motors to the Driver boards? and do i need to shield them, if yes i can i do this simply?



  2. #2
    The voltage doesn't matter. I'ts the current that determines the size of the wires. 7/0.2 is rated at 1.4 Amps so is a bit light for your motors. It does depend on the motor rating which could be up to about 3 A depending on the exact model. I would go for at least 16/0.2.

    Screening should not be needed within the cabinet provided you keep the input signal wires away from the motor wires.


  3. The Following User Says Thank You to russell For This Useful Post:

Similar Threads

  1. VFD to motor cable wire size (Gauge)
    By artman12us in forum Spindles & Drive Motors
    Replies: 2
    Last Post: 24-04-2014, 06:11 PM
  2. CY cable terminals
    By kingcreaky in forum Marketplace Discussion
    Replies: 15
    Last Post: 26-03-2014, 07:24 AM
  3. motor and spindle cable size?
    By paulus.v in forum General Electronics
    Replies: 4
    Last Post: 04-02-2014, 09:18 PM
  4. cable prices
    By deannos in forum Marketplace Discussion
    Replies: 15
    Last Post: 10-12-2012, 09:25 PM
  5. Stepper shaft size and pulley bore size problem
    By psiron in forum Linear & Rotary Motion
    Replies: 13
    Last Post: 15-06-2010, 03:11 PM


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts