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    Fuse Size between Alt and Battery

    I just ordered a 140amp HO alt from Excessive amperage. My question is what size fuse do I need between my battery and alternator? I have 4 gauge wire ran, and I am assuming that is enough. I just don't know what size of a fuse to put between my alt and battery?

    Someone please help?



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    Re: Fuse Size between Alt and Battery

    You fuse for the current handling of the cable, use this chart to find your fuse size.




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    Re: Fuse Size between Alt and Battery

    So get a 150 amp fuse just to be sure? Beings my alt is a 140 amp..



    ALL STOLEN:
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    Re: Fuse Size between Alt and Battery

    If its 4 gauge or bigger it will work fine.




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    Re: Fuse Size between Alt and Battery

    Quote Originally Posted by stones
    If its 4 gauge or bigger it will work fine.
    Yeah its 4 gauge wire from alt - batt. So 150 will be fine right? Just clarifying to be 100% sure.



    ALL STOLEN:
    Clarion DXZ745MP
    Directed 1500D at 1ohm
    Treo SSI 12.22 in a 35hz ported Truckbox
    Memphis PRC63 Coaxials Doors
    A Crossfire 35.2 for the doors

    Basic and reasonably cheap, but it works.

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    Re: Fuse Size between Alt and Battery

    No one ever said I was right? 4 gauge from alt to battery with a 150amp fuse? that work?



    ALL STOLEN:
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    Directed 1500D at 1ohm
    Treo SSI 12.22 in a 35hz ported Truckbox
    Memphis PRC63 Coaxials Doors
    A Crossfire 35.2 for the doors

    Basic and reasonably cheap, but it works.

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    Re: Fuse Size between Alt and Battery

    yes, im ordering a 275 amp what size fuse will i need?




    Quote Originally Posted by the12voltsux View Post
    You low voltage may be due to having three batteries. have you tried only using one battery?

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    Re: Fuse Size between Alt and Battery

    for a 4 gauge wire i have 80a and it works fine




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    Re: Fuse Size between Alt and Battery

    Quote Originally Posted by Meh!
    No one ever said I was right? 4 gauge from alt to battery with a 150amp fuse? that work?
    yes that will be fine.




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    Re: Fuse Size between Alt and Battery

    alright, great..Thanks moe! :-)



    ALL STOLEN:
    Clarion DXZ745MP
    Directed 1500D at 1ohm
    Treo SSI 12.22 in a 35hz ported Truckbox
    Memphis PRC63 Coaxials Doors
    A Crossfire 35.2 for the doors

    Basic and reasonably cheap, but it works.

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    Re: Fuse Size between Alt and Battery

    uh oh. i have a 160a alt, and a 1600w amp. and im using a 60a fuse X_X




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