Queeg wrote:
While on the subject, would someone please explain the difference
between an Isolation Transformer and a Galvanic Isolator? Do they do
different things? Is one better to have than the other?

Thanks,

Gary


They have overlapping functions. Both
can address the problem of corrosive
galvanic currents passing from an
unprotected boat through the shore power
cable grounding conductor to another
boat. If the other boat(s) are
protected, they will more rapidly
deplete their zincs to protect the
unprotected boat through that cable.

The galvanic isolator really performs no
other function, is relatively cheap, and
is easily installed.

The isolation transformer isolates a
boat's AC electrical system (and usually
the DC system as well) from the outside
world. This means that if there are
certain types of problems with the shore
power system, or if there is an
unprotected boat connected to the shore
power system, the boat using the
isolation transformer is protected.

In a no-holds-barred contest, the more
costly isolation transformer would be
the preferred choice.

Both devices also protect neighboring
boats from your boat if your own zinc
should be depleted. It is that spirit of
the golden rule that so permeates the
cruising community with a desire to
leave a clean wake.

Do a web search on isolation transformer
and one on galvanic isolator. You'll
find a lot of interesting info.

Chuck

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