What’s everyone using to fuse between the alternator and starter relay

Discussion in 'Electrical and Ignition' started by Barnes, Jun 10, 2018.

  1. Barnes

    Barnes New Member

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    I did the ammeter bypass on my 68 and currently have 6 gauge wire from the 60 amp alternator, to a 80 amp circuit breaker, then to the starter relay. My problem is the circuit breaker is tripping on hot days (I believe the breaker is faulty, tested with another alternator). I would like to try another way of fusing the charge wire and would like to know your ideas. Fuseable link, another brand circuit breaker, mega fuse, none?

    Thanks!
     
  2. 67Dart273

    67Dart273 Well-Known Member

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    1...How large is the alternator (output rating?)

    2...WHERE is the breaker mounted? Engine heat will de-rate the trip amperage
     
  3. Barnes

    Barnes New Member

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    The alternator is a 60 amp square back and the breaker is mounted next to the battery, in the engine bay.
     
  4. 512Stroker

    512Stroker We are all here because we are not all there.

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    I have a 60 amp alternator and a 70 amp CB mounted next to the battery, has never tripped.
    Even with the factory A/C on.
     
  5. Barnes

    Barnes New Member

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    What brand CB are you running?
     
  6. 512Stroker

    512Stroker We are all here because we are not all there.

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    Dont let the name foul ya, got it at Oreily's

    Littlefuse 0185070.X Type lll 70A
     
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    • Barnes

      Barnes New Member

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      Awesome, thank you.
       
    • 67Dart273

      67Dart273 Well-Known Member

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      It IS possible you have a weak / faulty breaker.
       
    • swifty

      swifty Well-Known Member

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      Make sure connections are tight and clean. Look for signs of heat from high current. A bad crimp or connection can draw a lot of current.
       
    • billccm

      billccm Member

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