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Everywhere a ground wire!

Discussion in 'Bigger Boats' started by twodzusfittings, Feb 25, 2019. Add this thread to a FAQ

  1. twodzusfittings

    twodzusfittings

    Joined Aug 11, 2011
    394 posts, 12 likes
    O'day 30
    US Sassafrass , MD
    Hi everyone, I'm in the middle of cleaning up a new to me 1983 O'Day 30 C/B and apart from the rotten boards, dirt, messes and aging parts, I've come across a something I've never seen before, as in my previous boat ownership my old boat had an outboard. At every point where there is a hose, a ground wire had been installed to connect the two metal parts and runs parallel or if the hose is long, its been wrapped around the hose. Is this normal?
     


  2. Don S/V ILLusion

    Don S/V ILLusion

    Joined Sep 25, 2008
    5,277 posts, 426 likes
    Alden 50
    US Sarasota, Florida
    Somebody thought it necessary to ground every thruhull fitting to a common ground. A result of the “too much free time” club.

    It probably won’t hurt but the conventional wisdom is that doing this is completely unnecessary either for grounding or as a counterpoise for an HF radio antenna.
     


    Last edited: Feb 25, 2019
  3. Justin_NSA

    Justin_NSA

    Joined Jul 7, 2004
    5,347 posts, 1,062 likes
    Hunter 30T
    US Cheney, KS
    If a hose isolates a metal part from ground I think I understand what they were trying to do. Usually though both ends of a hose are grounded somewhere.
     


  4. twodzusfittings

    twodzusfittings

    Joined Aug 11, 2011
    394 posts, 12 likes
    O'day 30
    US Sassafrass , MD
    That makes sense. Thanks.
     


  5. eherlihy

    eherlihy

    Joined Aug 17, 2010
    162 posts, 25 likes
    Oday 35
    US Barrington


  6. Justin_NSA

    Justin_NSA

    Joined Jul 7, 2004
    5,347 posts, 1,062 likes
    Hunter 30T
    US Cheney, KS
    The OP doesn't say what hoses these wires are on. Do we assume it's the thru hulls? Engine hoses?
     


  7. twodzusfittings

    twodzusfittings

    Joined Aug 11, 2011
    394 posts, 12 likes
    O'day 30
    US Sassafrass , MD
    For clarification, every thruhull, every engine hose and the hose to the fuel tank, have ground wires. It looks like a wire mess. I read the boat US article and all of it makes sense. Sounds like a previous owner was taking every precaution. Multiple grounding points on the engine along with the fuel tank should be sufficient as long as two sacrificial anodes are attached to the prop shaft,
     


  8. Don S/V ILLusion

    Don S/V ILLusion

    Joined Sep 25, 2008
    5,277 posts, 426 likes
    Alden 50
    US Sarasota, Florida
    What BoatUS article?

    Sounds like a sure fire recipe for exacerbating electrolysis by multiple ground paths, all of which at different ‘potential’.
     


  9. eherlihy

    eherlihy

    Joined Aug 17, 2010
    162 posts, 25 likes
    Oday 35
    US Barrington
    My prior post. Three posts before yours.
     




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