[RE-wrenches] Sunpower modules

[William Miller]

Larry:

Thanks for the reply.  Can you use Outback and Xantrex charge controllers 
with the positive ground?

William Miller


At 09:14 PM 3/19/2009, you wrote:
>William,
>
>I know you asked Jeff but thought I would respond as all we do are off 
>grid, battery based systems. I typically see that the Vmp voltage of 
>Sunpower modules is closer to spec with than with Kyocera, Sharp or 
>Mitsubishi. In my opinion Sunpower modules are only surpassed by Sanyo. I 
>realize this is anecdotal but after hundreds of installs you begin to 
>notice these things.
>
>Larry Crutcher
>
>On Mar 19, 2009, at 5:46 PM, William Miller wrote:
>
>>Jeff:
>>
>>Have these modules worked for you in battery based systems?
>>
>>William Mill
>>
>>
>>At 01:27 PM 3/19/2009, you wrote:
>>
>>>Hiya Jeff,
>>>You are correct that the sunpower modules are positively grounded.  You are
>>>also correct that sunpower only deals with dedicated "dealers".  That means
>>>that if you are not one of their dealers you cannot get their panels.  It is
>>>my understanding that sunpower is always looking for new dealers, so you may
>>>want to check in with them.  As far as architectural review committees and
>>>such, we have never had a problem using SPR modules in the areas where
>>>review is an issue.  The positive ground really does not affect aanything.
>>>Instead of your negative wire being the grounded (white) conductor it is
>>>your positive conductor that is grounded.  This means you are switching the
>>>negative instead of the positive in the DC disco.  Sunpower sells packaged
>>>systems, so they provide positive ground inverters from different
>>>manufacturers.
>>>
>>>Evergreen now has a black framed module, and I believe Sharp does too.  I
>>>hope this helps, any other questions feel free to contact me.
>>>Jeff Blick
>>>Lead PV Installer
>>_______________________________________________
>>List sponsored by Home Power magazine
>>
>>List Address: 
>><mailto:RE-wrenches at lists.re-wrenches.org>RE-wrenches at lists.re-wrenches.org
>>
>>Options & settings:
>><http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org>http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>>
>>List-Archive: 
>><http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org>http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
>>
>>List rules & etiquette:
>><http://www.re-wrenches.org/etiquette.htm>www.re-wrenches.org/etiquette.htm
>>
>>Check out participant bios:
>><http://www.members.re-wrenches.org>www.members.re-wrenches.org
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20090319/8053835c/attachment-0003.html>