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From: mike senko (no email)
Date: Wed Oct 03 2001 - 01:35:13 EDT
Comment in line:
----- Original Message -----
From: "Arild Jensen" <>
To: "mike senko" <>
Sent: Monday, October 01, 2001 10:03 PM
Subject: Re: lv-ab: Galvanic Current
> At 06:11 AM 10/02/2001 -0700, you wrote:
> >One other question on this subject.
> >
> >Why would anyone want to use galvanic isolators?
> >To save the zinc?
>
> REPLY
>
> Mike
> You are partially correct. What you are overlooking is that when you have
> a green wire bonding system directly linked to the shore power circuit;
> not only ar you prote3cting your own metal but also all the other metal in
> other boats.
>
I work from the premise that AC ground is not attached to DC ground
or the boats bonding system. A direct violation of the ABYC standard I know,
but
the way I set my own boats up.
I also use a GFCI.
Thanks for the explanation.
Mike
> This results in accelerated zinc corrosion.
> By installing the galvanic isolator you limit the loop to your own boat.
> Now your zinc provides protection only to your own boat and lasts much
longer.
> While this is covered in the ABYC standards, it is not very well presented
> and explained. It took a a couple of sessions by an expert doing some
> seminars at IBEX before I really understood the process.
>
> Cheers
>
> Arild
>
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