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  1. #1
    Member
    Join Date
    Aug 2011
    Posts
    33
    Location
    NH
    Tractor
    Kubota BX23

    Default What Size Fuse?

    I recently installed a 12VDC power window motor to rotate the snowblow chute and a 12VDC 4" actuator to change the angle of the chute deflector. I am about to do the wiring and was wondering what size fuse to put on each device. This snowblower is front mounted on a BX23.

  2. #2
    Elite Member
    Join Date
    Jun 2011
    Posts
    2,517
    Location
    NE Oklahoma
    Tractor
    MF 230 and Mitsubishi D2000

    Default Re: What Size Fuse?

    You'll need to determine the amps or wattage of each motor to size the fuses. MOST (not all) window motors pull around 5 to 7 amps, but without knowing what yours is.......

    Ken
    Massey Ferguson 230
    Mitsubishi D2000

  3. #3
    Platinum Member
    Join Date
    Jun 2012
    Posts
    557
    Location
    East Tennessee
    Tractor
    John Deere 4200

    Default Re: What Size Fuse?

    Quote Originally Posted by kensnelling View Post
    You'll need to determine the amps or wattage of each motor to size the fuses. MOST (not all) window motors pull around 5 to 7 amps, but without knowing what yours is.......

    Ken
    I agree, Do you know what this power window motor was made for?

  4. #4
    Elite Member
    Join Date
    Aug 2004
    Posts
    3,540
    Location
    North of Mtl,Que,Can (Ste Adele)
    Tractor
    MT180D

    Default Re: What Size Fuse?

    A fuse job is to protect the wire from melting! The fuse is the weak link, it blows before the wiring melts and sets your tractor on fire.
    In other words rate the fuse based on wire gauge, and wire gauge is based on the devices requirement.
    (10 amp fuse is norm for 16 gauge.)

  5. #5
    Veteran Member
    Join Date
    Oct 2011
    Posts
    1,038
    Location
    Olalla WA, Kitsap Peninsula, West of Seattle
    Tractor
    Kubota BX25

    Default Re: What Size Fuse?

    Most parts stores can help with both the amp/wattage draw of various common components and have charts for amps vs wire size. Foreign parts are in metric so a little more calculation is required to convert to our Ohms Law formulas. Ditto on the last on sizing fuse to the wire ampacity. If those auto components do not have enough power to move the compnents on your blower look mint the motor actuators used in the HVAC industry, unless they are resistance modulated or circuit board controlled they are 24 volts AC and work fine on 12V DC. All this stuff is on the internet.

    Ron

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