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Subject: TWL: Re: Alternatives to isolation transformer?
From: Medistat Support Desk (owen@XXX.XXX)
Date: Thu May 02 2002 - 13:45:49 EDT
There is also the issue of the effect of continuous electromagnetic
radiation (fields) very near to your body.
The literature suggests that any effects are cumulative and that even 60Hz.
is likely to cause neurone damage.
Owen C English.
----- Original Message -----
From: Richard Morrison <richard@XXX.XXX>
To: <trawler-world-list@XXX.XXX>
Sent: Thursday, May 02, 2002 6:40 PM
Subject: TWL: Alternatives to isolation transformer?
> I have recently been strongly encouraged to install an isolation
> transformer on the boat. While this does seem like it would provide
> excellent "insurance" against shore power problems, it is somewhat
> expensive, and from alternative viewpoints I've read in the archives, may
> have its own issues. Also I'm especially concerned about the probable hum,
> which likely would be on the other side of a bulkhead from my pillow
every
> night. My (admittedly ignorant) understanding of the utility of an
> isolation transformer is that if one were able to be assured of the
quality
> of the shore power, and have on-board ground fault leaks under control,
the
> benefits would probably be marginal. Of course, I could be missing
> something here.
>
> So, I'm wondering if there is any nifty device (sort of like a combination
> of reverse polarity alarm, galvanic isolator, and GFCI) that might provide
> most of the benefits of an isolation transformer, but be in a more modest
> price range. Or maybe just installing a simple device or two and being
> religious about checking the quality of shore power before plugging in
> would do most of the job.
>
> Yes, I know that some do have the attitude that one can never be too
> careful around electricity and a mistake can be deadly and that the $2K-3K
> to have an isolation transformer installed to protect one's life can be
> considered cheap insurance, but I'm trying to strike a reasonable balance
> here, if possible. If eliminating all possible risks were paramount, I
> wouldn't be on a boat in the first place.<g> I'm not ruling out the
> transformer approach, but want to more fully understand pro's/con's and
> possible alternatives. Any input on this? TIA,
>
>
> Richard
> -------------------------
> 49' Marine Trader Pilothouse (1978)
> Twin Lehman 120's
> SF Bay, CA
>
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