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Motor fuse and cable area?

Discussion in 'New users start here - FAQ' started by 427Cobra, Jan 19, 2019.

  1. 427Cobra

    427Cobra There is no substitute for cubic inches

    Joined:
    Dec 26, 2018
    Messages:
    47
    Location:
    Sweden
    Balance:
    567Coins
    Ratings:
    +22 / 1 / -0
    My Motion Simulator:
    2DOF, DC motor, JRK
    Hi,
    What fuse size is recommended to use in front of a 200W/12V motor and what cable area? Is 2,5mm² OK or do I need 4mm²?
    427Cobra, Jan 19, 2019
    #1
  2. alexdraco

    alexdraco Member

    Joined:
    Aug 8, 2018
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    85
    Balance:
    278Coins
    Ratings:
    +34 / 0 / -0
    My Motion Simulator:
    2DOF, DC motor, Arduino
    Ciao,
    For the fuse 200/12 = 16.6 (indicatively), however, on the motor plate you should have the data "A = ampere" usually use a fuse equal to this data.

    For 200W to 24Vdc should be 1.5mm² (cable length 1m).
    I personally used a 2.5mm² cable (cable length 70cm.) For electric motor 24Vdc - 235W - 26A
    alexdraco, Jan 19, 2019
    #2
  3. 427Cobra

    427Cobra There is no substitute for cubic inches

    Joined:
    Dec 26, 2018
    Messages:
    47
    Location:
    Sweden
    Balance:
    567Coins
    Ratings:
    +22 / 1 / -0
    My Motion Simulator:
    2DOF, DC motor, JRK
    Thanks @alexdraco.
    Will use a 20A DC circuit breaker for each 20Amp motor and think I will go for 4mm² cable to be on the safe side. Saw a table for low voltage use in cars (audio) and 2.5mm² was rated 25Amp and 4mm² 30Amp (no correction for length and ambient temperature).
    427Cobra, Jan 20, 2019
    #3
  4. alexdraco

    alexdraco Member

    Joined:
    Aug 8, 2018
    Messages:
    85
    Balance:
    278Coins
    Ratings:
    +34 / 0 / -0
    My Motion Simulator:
    2DOF, DC motor, Arduino
    Ciao,
    you do well to make everything safe.
    Good continuation of the work.
    alexdraco, Jan 20, 2019
    #4