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post #10 of Old 12-22-2003
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aluminum boats?

Altho'' we now use an isolation transformer because of the need to use 220V-250V AC aboard our 120V boat, a cheaper alternative is a Galvanic Isolator. These are far less expensive as a method for protecting a boat from a ''hot dock'' (altho'' nothing will protect a boat from its own issues as e.g. when a compass wire chafes thru, generates a current on own ship''s wiring and the prop blades start to fall off). Newmar makes a good Galvanic Isolator; there are others but this one worked very well for us when we had a ''hot dock'' problem.

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