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post #9 of Old 06-21-2012
Maine Sail
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Re: Westerbeke W 27 Alternator upgrade

Originally Posted by cwyckham View Post
After checking, I'll know if I need to go down to a series 6 or if the 7 will work.

Eventually, I want to upgrade and go almost totally solar, so the alternator will become the backup to the solar, but this system should hold me for a few years.
The series 6 and 7 share are very close in case size with the 7 being perhaps a tad smaller. The real difference is that the 6 series has a back up internal regulator built into it and is an isolated ground unit (nice feature) vs. case ground of the 7 series. The 6 is also available in larger output ranges.. I generally prefer the 6 series over the 7 series because I just feel you get a lot more for the money. With a simple switch you can just toggle to the internal regulator if the external goes kaput, and they can go kaput from time to time...

-Maine Sail / CS-36T

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