[Rhodes22-list] advice on ground for battery

[Roger Pihlaja]

Hank,

The issue of whether or not to bond all 12 VDC systems on a boat to an earth
ground is controversial.   Since Lou cited Don Casey's book, ("Sailboat
Electrics Simplified"), & is a big boy; I presume he has already considered
the pros & cons, made the decision regarding "yes or no", and only had
questions of "how" to implement the grounding.  This is what I tried to help
him with.  There have been numerous threads & discussions on this list about
the question of "yes or no".

Before you make sweeping statements such as in the post below, I suggest you
also read a good reference on the subject, such as Don Casey's book.  This
issue is no where near as open & shut as you make it sound.

Why do you think highly efficient sintered bronze grounding plates such as
the Guest Dynaplate are commercially available?

Roger Pihlaja
S/V Dynamic Equilibrium

----- Original Message -----
From: "Hank" <hnw555 at gmail.com>
To: "The Rhodes 22 mail list" <rhodes22-list at rhodes22.org>
Sent: Monday, November 01, 2004 5:29 PM
Subject: Re: [Rhodes22-list] advice on ground for battery


> This is a bad idea!!!  Grounding your electrical devices through the
> water can cause lots of corrsion due to bad electrical connections
> within marinas and other boats.  Most marinas these days are a "hot
> bed" of electrical current.  You want your electrical devices isolated
> from all of this or you will greatly increase galvanic corrosion.
>
> Again, read the article at http://www.sailmail.com/grounds.htm
> for a better explanation of this.
>
>
> On Mon, 1 Nov 2004 16:14:48 -0500, Roger Pihlaja
> <cen09402 at centurytel.net> wrote:
> > Lou,
> >
> > Assuming your Rhodes 22 has an electrical system something like Dynamic
> > Equilibrium, my 1976 model, the 12 VDC fuse or circuit breaker panel is
> > located on the aft bulkhead of the main cabin just below & to starboard
of
> > the companionway hatch.  If you open up that electrical panel, you
should
> > see a bronze buss bar that the (-) terminals from all the 12 VDC
circuits
> > are tied into & which is, in turn, connected to the (-) terminal of the
> > battery via a HD cable.   I would install the Dynaplate on the outside
of
> > the hull roughly below this point.  If you locate the Dynaplate as far
> > inboard as possible towards the shoal draft keel; then, there won't be
any
> > interference with your trailer.  The Dynaplate is made of sintered
powdered
> > bronze, which makes it porous & gives the device a tremendous effective
> > surface area when in contact with water.  The Dynaplate will come with a
> > couple of special gold plated thru-bolts.  Run a HD ground cable from
your
> > boat's (-) buss bar down to one of the gold plated thru bolts on the
> > Dynaplate.  By the way, you won't believe how much better your VHF and
FM
> > radios will perform after you provide them with a good ground.
> >
> >
> >
> > Roger Pihlaja
> > S/V Dynamic Equilibrium
> >
> > ----- Original Message -----
> > From: "Lou Rosenberg" <lsr3 at MAIL.nyu.edu>
> > To: "The Rhodes 22 mail list" <rhodes22-list at rhodes22.org>
> > Sent: Monday, November 01, 2004 3:12 PM
> > Subject: Re: [Rhodes22-list] advice on ground for battery
> >
> > >
> > >
> > >
> > >   Roger,
> > >   Thanks again, but to be totally honest where to I install this
ground
> > plate??
> > >   and will I have to lift it off my trailer to to this?
> > >   thanks
> > > L
> > >
> > > >Lou,
> > > >
> > > >Look in the West Marine 2004 Master Catalog on pp. 74.  In the upper
left
> > > >corner of the page, look at a product called the Guest Dynaplate
Sintered
> > > >Bronze Ground Plate.  The appropriate size for a Rhodes 22 is the 6"
X 2"
> > X
> > > >1/2" Guest M/N: 4006.
> > > >
> > > >Roger Pihlaja
> > > >S/V Dynamic Equilibrium
> > > >
> > > >----- Original Message -----
> > > >From: "Lou Rosenberg" <lsr3 at MAIL.nyu.edu>
> > > >To: "The Rhodes 22 mail list" <rhodes22-list at rhodes22.org>
> > > >Sent: Monday, November 01, 2004 10:53 AM
> > > >Subject: Re: [Rhodes22-list] advice on ground for battery
> > > >
> > > >
> > > >>    Rhodies,
> > > >>      Although I have been consulting Don Casey's book on Electrical
> > > >>  wiring I still dont see a good spot for ground wire of system on
my
> > > >>  Rhodes.  Can anyone advise please?
> > > >>    The bolts on my CB cap are not grounded.
> > > >>    any advice appreciated
> > > >>    Lou
> > > >>
> > > >>  __________________________________________________
> > > >>  Use Rhodes22-list at rhodes22.org, Help? www.rhodes22.org/list
> > > >>
> > > >>
> > > >
> > > >
> > > >__________________________________________________
> > > >Use Rhodes22-list at rhodes22.org, Help? www.rhodes22.org/list
> > >
> > > __________________________________________________
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> > >
> > >
> >
> > __________________________________________________
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> >
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