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Electyrical system

PostPosted: Mon Mar 27, 2017 2:48 pm
by sajor
Hi Folks, I am I the process of cleaning up a sailboat that had several iterations of electrical systems of which most were not completely removed when the newer systems were installed. Consequently, the last system did not work and it was only due to the incredible amp-hour reserve of the house batteries that the boat was able to operate. I stripped out most everything and designed a system using the functional parts remaining. I have not had much experience with external regulators, so I would appreciate a fresh set of eyes to inspect the circuit I put together. I drew it with images of the components so the owner could follow the design. Here is a Dropbox link to the image:

Thanks for your time

Re: Electyrical system

PostPosted: Tue Mar 28, 2017 12:41 pm
by Coulomb
You should remove all switches that carry alternator current. See this URL:

Wire the alternator to the house battery without an intervening set of contacts that will fail. When they do, the regulator will be toasted.

See more in the Primer:

Re: Electyrical system

PostPosted: Wed Mar 29, 2017 3:36 am
by sajor
Thanks, I should have been aware of the difference between rotary (A/B switch) and the disconnect type used in the alternator circuit. I will remove the rotary!

Re: Electyrical system

PostPosted: Wed Mar 29, 2017 4:14 am
by sajor
Think I have it now: