<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">William,<div><br></div><div>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.</div><div><br></div><div>Larry Crutcher</div><div><br><div><div>On Mar 19, 2009, at 5:46 PM, William Miller wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div> <font size="3">Jeff:<br><br> Have these modules worked for you in battery based systems?<br><br> William Mill<br><br> <br> At 01:27 PM 3/19/2009, you wrote:<br><br> </font><blockquote type="cite" class="cite" cite=""><font size="3">Hiya Jeff,<br> You are correct that the sunpower modules are positively grounded. You are<br> also correct that sunpower only deals with dedicated "dealers". That means<br> that if you are not one of their dealers you cannot get their panels. It is<br> my understanding that sunpower is always looking for new dealers, so you may<br> want to check in with them. As far as architectural review committees and<br> such, we have never had a problem using SPR modules in the areas where<br> review is an issue. The positive ground really does not affect aanything.<br> Instead of your negative wire being the grounded (white) conductor it is<br> your positive conductor that is grounded. This means you are switching the<br> negative instead of the positive in the DC disco. Sunpower sells packaged<br> systems, so they provide positive ground inverters from different<br> manufacturers.<br><br> Evergreen now has a black framed module, and I believe Sharp does too. I<br> hope this helps, any other questions feel free to contact me. <br> Jeff Blick<br> Lead PV Installer</font></blockquote></div> _______________________________________________<br>List sponsored by Home Power magazine<br><br>List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.org</a><br><br>Options & settings:<br><a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br><br>List-Archive: <a href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org">http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</a><br><br>List rules & etiquette:<br><a href="http://www.re-wrenches.org/etiquette.htm">www.re-wrenches.org/etiquette.htm</a><br><br>Check out participant bios:<br><a href="http://www.members.re-wrenches.org">www.members.re-wrenches.org</a><br><br></blockquote></div><br></div></body></html>