[Rhodes22-list] Galvanic corrosion

[Michael Meltzer]

maybe you should be think of solar/wind/and eneragy saving on the boat, i.e. spending the money to get less dependant on the dock?

MJM

----- Original Message ----- 
From: "Mark Kaynor" <mark at kaynor.org>
To: "The Rhodes 22 mail list" <rhodes22-list at rhodes22.org>
Sent: Monday, June 28, 2004 1:18 PM
Subject: RE: [Rhodes22-list] Galvanic corrosion


> Bob,
> 
> I'd actually prefer an isolation xfmr, but a new Charles 3.8 KVA unit rated
> for marine use at 32 amps starts at around $750 (on sale!), weighs in at 70
> lbs, and is 12"x12"x10". For my needs, the 1 lb. 2"x4"x3" galvanic isolator
> works well enough, is easier to install, considerably cheaper, and uses less
> valuable space.
> 
> An isolation xfmr on the dock would be great while we're at this marina, but
> if we travel and decide to stay at some other marina for a period of time,
> having one installed at our home marina won't be much good to us <g>.
> 
> Mark
> 
> -----Original Message-----
> From: rhodes22-list-bounces at rhodes22.org
> [mailto:rhodes22-list-bounces at rhodes22.org]On Behalf Of Robert Skinner
> Sent: Monday, June 28, 2004 12:57 PM
> To: The Rhodes 22 mail list
> Subject: Re: [Rhodes22-list] Galvanic corrosion
> 
> 
> Mark Kaynor wrote:
> > ...
> > Now that we've got the Tayana and have her docked at a marina w/ water and
> > electricity, and have sacrificial zincs to maintain (everywhere, it
> seems),
> > I've decided to install a galvanic isolator on our incoming AC ground.
> > ...
> > We$t Marine has a 30A Guest w/ monitoring for $240. I just ordered one on
> > eBay, same thing, new, for $133. We'll see how it goes.
> 
> Mark -
> 
> Please pardon my ignorance.  I'm truly in over my
> head here.
> 
> I need some help understanding why you wouldn't
> use an isolation transformer on the dock to remove
> all DC paths to shore power, setting up a separate
> ground within the boat's own circuitry to avoid
> boat-to-shore loops.
> 
> Or is that what you are actually doing but under
> another name?
> 
> Thanks for input from Mark or any other with
> knowledge in this matter,
> --
> Robert W. Skinner CDP, "Squirrel Haven"
> 9 Gateway Commons, Gorham, ME 04038-1331
> 
> __________________________________________________
> Use Rhodes22-list at rhodes22.org, Help? www.rhodes22.org/list
> 
> __________________________________________________
> Use Rhodes22-list at rhodes22.org, Help? www.rhodes22.org/list
>