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<DIV dir=ltr align=left><SPAN class=980231422-15052009>I believe that a sunny
island will work with any batteryless grid-tie inverter, Enphase included. The
catch is that it wont work as well as a Sunnyboy, and that may or may not be
much of an issue. If the battery bank is large relative to the array, like a
C/30-40 charge rate, then it will work just fine. If the charge rate is high -
less than that, especially like a C/3-10, you'll have some serious problems.
(while a C/3-10 makes little sense on an off-grid system, it sometimes does
with GTw/BB)</SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=980231422-15052009></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=980231422-15052009>I reported on a problem
and asked for some advise a few weeks back, and this is a good oportunity to
give an update. I'd rather not take the time to describe the whole problem, you
can look up the original post if you're interested. SMA seems to have found a
solution that was there all the time (and it took weeeeeeeeeks for them to
figure this out, I think another installer was pushing them harder to resolve it
- thanks whoever you are). SMA-America was not aware of some of the finer
details of how the SI works, and the manual does not go into the kind of detail
necessary to make the system work properly. One needs to buy a special USB to
485 adapter and change some settings in the Sunnyboy for it to work better than
it would with any other grid-tie inverter. Apperently the next version of
firmware should fix this so it's not necessary to do the configuration
change.</SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=980231422-15052009></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=980231422-15052009>Bottom line is they seem
to have resolved my problem (3 week lead time on the special cable, so I haven't
been able to test it), but it was frustrating what I had to go through to get
the system to work the way it should. I think SMA-America's tech support is more
knowledgeble now and others should benefiet from what I had to go
through. I just couldn't beleive that no one else had seen this problem. We
don't generally consider ourselves to be on the cutteing edge here at Positive
Energy. But apparently we're on the bleeding edge on this one.</SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=980231422-15052009></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=980231422-15052009></SPAN><FONT face=Coronet
color=#008000 size=5>Mark Drummond</FONT></DIV>
<DIV class=Section1>
<P class=MsoAutoSig><FONT face="Palatino Linotype">Field Manager</FONT></P>
<P class=MsoAutoSig><FONT face="Palatino Linotype">Positive Energy,
Inc.</FONT></P>
<P class=MsoAutoSig><?xml:namespace prefix = o ns =
"urn:schemas-microsoft-com:office:office" /><o:p><FONT face="Palatino Linotype"
size=2>NABCEP Certified PV installer</FONT></o:p></P></DIV>
<DIV> </DIV><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> re-wrenches-bounces@lists.re-wrenches.org
[mailto:re-wrenches-bounces@lists.re-wrenches.org] <B>On Behalf Of
</B>I2P@aol.com<BR><B>Sent:</B> Friday, May 15, 2009 3:41 PM<BR><B>To:</B>
re-wrenches@lists.re-wrenches.org<BR><B>Subject:</B> Re: [RE-wrenches] Sunny
Island 5048 & Enphase<BR></FONT><BR></DIV>
<DIV></DIV><FONT id=role_document face=Arial color=#000000 size=2>
<DIV>
<DIV>In a message dated 5/15/2009 2:09:07 P.M. Pacific Daylight Time,
Richard.L.Ratico@valley.net writes:</DIV>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue 2px solid"><FONT
style="BACKGROUND-COLOR: transparent" face=Arial color=#000000 size=2>Has
anyone tried this combination offgrid?<BR></FONT></BLOCKQUOTE></DIV>
<DIV></DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>Marv told me that Enphase does sync to Sunny Island.</DIV>
<DIV> </DIV>
<DIV>Don Loweburg</DIV></FONT>
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