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  1. #1
    Join Date
    Dec 2019
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    amersham
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    45

    Positive battery cable

    AK suggests/recommends using 135 amp rated cable for the battery positive due to its length requirement of 5M.
    The question is this ok or should i go higher to say 170 amp from car builder solutions ,its even possible to purchase 345,415 or 485 amps.
    Any suggestions appreciated

  2. #2
    Join Date
    May 2004
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    Cowbridge, United Kingdom
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    61
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    9,930
    Go with the biggest one you can get in there.
    Make sure it's flexible though.
    Likewise with the grounds.
    Many people use cable from a welding equipment supplier.
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  3. #3
    Join Date
    Jun 2005
    Location
    Norton Cross
    Posts
    519
    I went with 35mm cable and it’s been fine. This is higher rated than what AK recommend and fits fine. Bought mine from 12volt planet

  4. #4
    Join Date
    Jun 2014
    Location
    Swansea
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    55
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    108
    I went with a 50mm cable and I have also wrapped the starter motor with a thermal jacket. I was having issues starting the engine after it had warmed up. A bit belt and braces but I have had no issues since.

  5. #5
    Join Date
    Dec 2019
    Location
    amersham
    Posts
    45
    Thanks Peter
    i think i will go with 35 amp.
    Regards

  6. #6
    Join Date
    Dec 2013
    Location
    Newark, Notts
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    69
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    1,525
    I went with 50mm.
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  7. #7
    Join Date
    Jan 2006
    Location
    Chelmsford Essex
    Posts
    984
    100 amp more from 35mm to the 50mm so the capacity increase is significant. For the price difference go with the larger cable. Also do you have a large enough crimping tool ?

    Having a good hex crimping tool makes a big difference with the finish on the terminals and ferrules. I would fit good quality battery terminals at the same time with terminated ferrule rather than screw down terminals.
    You will loose a lot across a poorly made termination.

  8. #8
    Join Date
    Dec 2019
    Location
    amersham
    Posts
    45
    Thanks for the advice, it makes good sense to have sound terminal connections

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