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At 03:09 PM 10/2/2011, you wrote:<br>
<blockquote type=cite class=cite cite="">Sounds like a good situation for
a sunny island system. </blockquote><br>
I second that option. Run high voltage strings (say 13- 30 volt
module strings) to the Sunny Boys, and AC couple to the Sunny
Islands. I'm running 440 feet to a Sunny Boy, and wire size
will not be a problem. You will likely need 4 of the Sunny Islands
if you want to be able to use the entire 15kW array for backup. It
is an expensive option, but if it is a super high end job, then this
would be the way to go. <br><br>
<br><br>
<br><br>
<blockquote type=cite class=cite cite="">Sent from my iPhone. <br><br>
On Oct 2, 2011, at 12:15 PM, Eric Thomas
<<a href="mailto:solarepiphany@gmail.com">solarepiphany@gmail.com</a>
> wrote:<br><br>
<blockquote type=cite class=cite cite="">Wrenches,<br><br>
We are designing a super high end grid-tied w/ battery backup system for
a customer. Array will be ~15kW; pole or stand alone structure mounted;
250' from home/batteries. My question is: does it make any sense to
invert the power at the array and use this ac to make the long run to the
batteries THEN connect to a typical battery charger rather than a dc
charge controller? Im mostly concerned with huge dc conductors making
this run across the property. Havent delved into the specific design
enough to size said conductors yet, or specify any equipment, but wanted
to know if im barking up the wrong tree ir not.<br>
Thanks for the insight.<br><br>
Eric Thomas<br>
Founder<br>
Solar Epiphany LLC<br>
NABCEP Certified PV Installer<br>
WA Electrical Contractor # SOLAREL911NR<br>
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