<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi Allan,<div><br></div><div>I'd guess you'd have to define "better".</div><div><br></div><div>But I'm pretty sure the efficiency of the the sunny boy is much higher than the XW CC.</div><div><br></div><div>I don't like the fact that the XW CC you have to mount your own disco/fuses. </div><div><br></div><div>Did you know that Midnite is coming out with an Epanel for the SI?</div><div><br></div><div>The best option would be the SI/SB version to me.</div><div><br></div><div>Cheers,</div><div><br></div><div>Jay</div><div><br></div><div>Peltz power</div><div><br></div><div><br></div><div><br></div><div><br><div><div>On Aug 23, 2012, at 7:39 AM, Allan Sindelar wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">
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Wrenches,<br>
We have worked with Outback Radian and Schneider XW once or twice
each for grid-tie with backup, and with Sunny Boy/Sunny Island
numerous times. The SMA is certainly the most sophisticated
equipment, but also the most expensive. <br>
<br>
For a particular job coming up, the loads are not excessive, and the
array will be 8kW. The main hitch is that the array will be located
on a barn roof that is about 500' from the BOS and home.<br>
<br>
I suspect that running high-voltage DC from the array to a Sunny
Boy, and then feeding a pair of Sunny Islands makes the most sense.
My question is this: does it make any sense to consider running two
high-voltage subarrays 500' to two Schneider XW-MPPT-80 600V charge
controllers, feeding two XW inverters (in order to handle the full
8kW) in a DC-coupled approach? <br>
<br>
Is there ever a situation in which this would be a better solution
than SMA?<br>
<br>
Thank you, as always,<br>
Allan<br>
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<font face="Times New Roman, Times, serif"><b>Allan Sindelar</b></font><br>
<small><a href="mailto:Allan@positiveenergysolar.com"><font color="#000099" face="Times New Roman, Times, serif"><u>Allan@positiveenergysolar.com</u></font></a></small><font face="Times New Roman, Times, serif"><br>
<span style="font-size: 10pt;">NABCEP Certified Photovoltaic
Installer<br>
NABCEP Certified Technical Sales Professional<br>
New Mexico EE98J Journeyman Electrician<br>
Founder and Chief Technology Officer<br>
<b>Positive Energy, Inc.</b><br>
3209 Richards Lane (note new address)<br>
Santa Fe, New Mexico 87507<br>
<b>505 424-1112</b><br>
<a href="http://www.positiveenergysolar.com/" target="_blank"><u>www.positiveenergysolar.com</u></a><o:p></o:p></span></font><p class="MsoNormal" style="margin-right: 722.25pt;"><span style="font-size: 10pt;"><font face="Times New Roman, Times,
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