Hi Norm, This is for the benefit of folks who do dock their boats. Whether using an isolation transformer or not the docked boat ought to meet the safety requirements by having the shore cable ground conductor connected to the boat ground. (ie: Engine block and the negative terminal of the 12Vdc system) However, if you connect the shore ground to boat ground you complete a circuit between own boat and the other boats in the vicinity and due to dissimilar metals in the water a DC leakage current may exist, causing damage due to electrolysis. If you connect the shore ground to boat ground through a galvanic isolator you may be safe and possibly free of damage. Then there is the question about whether to use a capacitor across the galvanic isolator and what harm does AC leakage do if any? Andina or other folks may volunteer to explain the effects of AC leakage? Cheers Ahmet sv8827
From: [email protected] To: [email protected] Date: Mon, 6 Dec 2010 14:17:23 -0500 Subject: Re: [Liveaboard] GALVANIC ISOLATOR While Andina builds superlative equipment, I have an isolation transformer on my boat. I got it for a reasonable price from Groban Supply many years ago. It is a multi-tap type transformer so it can be adjusted for low dock voltage. But since I rarely dock, I use it primarily as a 240 to 120 vac transformer to get 120 vac from the 240 vac output of my 8kw genset so it always sees a balanced load. Norm S/V Bandersnatch Lying Julington Creek FL N30 07.68 W081 38.47 ----- Original Message ----- From: Emory Jones To: [email protected] Sent: 12/6/2010 6:47:50 AM Subject: [Liveaboard] GALVANIC ISOLATOR Has any body had any experience with a Yandina galvanic isolator? I am planning to install a model GN-50N. Any input would be welcomed. Thanks, Emory Jones S/V Jacob Andrew Solomons, MD _______________________________________________ Liveaboard mailing list [email protected] To adjust your membership settings over the web http://liveaboardonline.com/mailman/listinfo/liveaboard To subscribe send an email to [email protected] To unsubscribe send an email to [email protected] The archives are at http://www.liveaboardonline.com/pipermail/liveaboard/ To search the archives http://www.mail-archive.com/[email protected] The Mailman Users Guide can be found here http://www.gnu.org/software/mailman/mailman-member/index.html _______________________________________________ Liveaboard mailing list [email protected] To adjust your membership settings over the web http://liveaboardonline.com/mailman/listinfo/liveaboard To subscribe send an email to [email protected] To unsubscribe send an email to [email protected] The archives are at http://www.liveaboardonline.com/pipermail/liveaboard/ To search the archives http://www.mail-archive.com/[email protected] The Mailman Users Guide can be found here http://www.gnu.org/software/mailman/mailman-member/index.html
