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Wiring - how to handle router power

Discussion in 'CNC Mills/Routers' started by Andreas Bockert, Nov 11, 2017.

  1. Andreas Bockert

    Andreas Bockert Journeyman
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    Hi

    I’m running a Makita router with my CNC. Will it be problematic to run the power cable alongside signal cables? The stepper cables are shielded but the signal cables are not.

    I’m a bit concerned about the possibility of interference.

    How have you solved this?

    Thanks,
    Andreas
     
  2. Scotty Orr

    Scotty Orr Veteran
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    I had an EMI problem with my Makita router and solved it by running a ground wire from the outer metal case of the Makita to the "ground pole" of a three-prong plug, then pluging that into my plug strip along with everything else - creating sort of a "Star" grounding. (While I was at it, I also attached another ground wire from the machine frame to the same pole.) You can get a cheap 3-prong plug body at any hardware store. For the Makita, I just crimped a ring connector to a wire and attached it with one of the screws near the top of the case. Anyway, this worked for me.
     
  3. Gary Caruso

    Gary Caruso Veteran
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    You can replace the makita cable very easily take the top cover off and there are screw terminals, replace the cable with shielded 2 conductor of 18 awg, use the drain lead to ground the case of the makita to an earth ground.
     
  4. Andreas Bockert

    Andreas Bockert Journeyman
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    @Gary Caruso That does indeed sound like an easy solution. The cable needed to be extended anyway...

    Edit: Is 18 enough? Online calculators seem to recommend 14.
    Edit 2: A second search seems like 18 should be a good fit for the Makita.
     
    #4 Andreas Bockert, Nov 12, 2017
    Last edited: Nov 12, 2017

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