"SBC" wrote in message
.. .
Are all Galvanic Isolators the same? Are the GUEST Galvanic Isolators from
West Marine as good as any others? I need to install a 30 AMP Galvanic
Isolator.



Is it true if I disconnect the dock power from the boat when I am not
their,
I do not need one?



Thank you



Here are a couple of good articles on the subject by Dave Pascoe:

http://yachtsurvey.com/corrosion_in_marinas.htm

http://yachtsurvey.com/corrosion.htm