Learning the HARD way...
Join Date: Jan 2007
Location: Boston / Ft Myers Area
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I just happened to be reading the chapter in Nigel Calder's book on the subject. A galvanic isolator, or an isolation transformer (better), should be used in order to protect you, and swimmers around your boat, from shock. In addition, to protect your boat, and other boats from galvanic corrosion, you should have either of these devices. The isolation transformer will do a better job of protecting your boat from corrosion.
If you are eager to study and learn how to wire a boat, then by all means have at it. However, there are nuances of wiring that you will need to learn.(like the connection into a circuit box should come from the bottom only) Otherwise I would strongly suggest that you pay the price, and hire a professional. Remember elecrticity and water DO mix - usually with catastrophic results.
FWIW - Nigel Calder's book is the Boatowner's Mechanical and Electrical Manual. It is well worth the $50 investment, IF you take the time to read it.
Last edited by eherlihy; 12-28-2007 at 04:33 PM.
Reason: corrected price of the book