Don Casey - Dragged Aboard Storm Tactics Handbook:
Modern Methods of Heaving-To for Survival in Extreme Conditions
by Lin Pardey and Larry Pardey


      

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Re: lv-ab: Galvanic Current

From: Richard Goodwin (no email)
Date: Mon Oct 01 2001 - 09:04:08 EDT

  • Next message: Gene Gruender: "lv-ab: sander for bottom paint?"

    > A floating neutral has the great advantage of being safe if there
    > is no leakage. One can touch a neutral or a hot while standing in the
    > bilgewater without danger.

    But not both, presumably... :-)

    The only downside to a completely floating neutral AND hot (in which
    case there is no difference), is that if an appliance should develop a
    short from a voltage to ground, then the other side, whichever one that
    is, becomes hot (120v with respect to safety ground). That would mean
    that if an appliance should develop a short from its hot wire to ground,
    then the neutral of the rest of the circuit would be at 120v potential.
    Or in Norm's case, his lamp would light right up.

    > I have a floating neutral on my boat. There is a small 120v light bulb
    > connected where the jumper between the neutral to the grounding terminal
    > strips would be in a house.

    Excellent idea. It's not really floating then, especially for small
    voltages/currents, which will go through the bulb without lighting it.
    But if you do have a fault of some sort, the light lets you know about
    it. Neat system!

    Dick
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