When you mechanic says it’s time to change cables...change your cables!

Discussion in 'Marine Electrical / Electronics' started by Diesel Jerry, May 23, 2019.

  1. Diesel Jerry

    Diesel Jerry Captain

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  2. MikesMarine22

    MikesMarine22 Senior Member

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    Why would anyone listen to the mechanic........ they were perfectly fine until they weren't
     
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  3. Ohfishalee

    Ohfishalee Member

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  4. Pequod

    Pequod Member

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    The switch was not designed to carry that amount of current.
     
  5. Diesel Jerry

    Diesel Jerry Captain

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    I am sorry...did you see the cables? Do you know what engine I was working with? Your profile says your in Cape Cod.. Are you actually in South Freeport standing over my shoulder?
     
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  6. Pequod

    Pequod Member

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    The switch is designed for 250 amps continuous and 350 amps intermittent. Melting plastic is the result of too much current flow thru the switches contacts. This would happen even if you had 4/0 cable installed installed on the line and load sides of the switch.
     
  7. captjohn

    captjohn Captain

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    Melted plastic is due to heat. Two possible causes, too much current, or resistance in the contacts. They can corrode over time, you can also draw an arc across the contacts if switched while carrying a load, resulting in resistance in the contacts.
     
  8. Diesel Jerry

    Diesel Jerry Captain

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    In any case the cables...that were bad have been changed, and obviously the switch has been as well.
    Customer is happy. I am happy.
     
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  9. Pequod

    Pequod Member

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    See we do agree, customer is happy and issue is resolved.
     
  10. Diesel Jerry

    Diesel Jerry Captain

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    Well with the starter draw of a Yanmar 1GM being well below 360 amps I wouldn’t say I agree. I figured no point in arguing a point in which couldn’t be proven either way. Is kind of like arguing what came first the chicken or the egg.
    This is the second tread that you have kind of “trolled” me on....but I will give you the benefit of the doubt and move on.
     
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  11. novivin

    novivin Senior Member

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    :rolleyes:Chillax ya’ll. Don’t heat up, you might melt like the switch did. Trolls...​
     
  12. Diesel Jerry

    Diesel Jerry Captain

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    Oh I am chilled. Water under the bridge. Hopefully when the tempo slows down at work, and at home I will be able to post more. This as been the weirdest and busiest spring I can remember.
     
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  13. novivin

    novivin Senior Member

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    I am glad you are busy!!! Rock on! I guess we need more love in this world! I wish people kept the trolling on the fish!
     
  14. Diesel Jerry

    Diesel Jerry Captain

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    No biggie. He may not have been trolling. It just seemed that way. He is a ABYC master tech so his opinion matters.
     
  15. ThePartsGuy

    ThePartsGuy Senior Member

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    Jerry I think your tag should lead with Jedi or some shit like that! lol
     

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