Hi Allan, I'd guess you'd have to define "better".
But I'm pretty sure the efficiency of the the sunny boy is much higher than the XW CC. I don't like the fact that the XW CC you have to mount your own disco/fuses. Did you know that Midnite is coming out with an Epanel for the SI? The best option would be the SI/SB version to me. Cheers, Jay Peltz power On Aug 23, 2012, at 7:39 AM, Allan Sindelar wrote: > Wrenches, > 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. > > 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. > > 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? > > Is there ever a situation in which this would be a better solution than SMA? > > Thank you, as always, > Allan > -- > Allan Sindelar > [email protected] > NABCEP Certified Photovoltaic Installer > NABCEP Certified Technical Sales Professional > New Mexico EE98J Journeyman Electrician > Founder and Chief Technology Officer > Positive Energy, Inc. > 3209 Richards Lane (note new address) > Santa Fe, New Mexico 87507 > 505 424-1112 > www.positiveenergysolar.com > > > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: [email protected] > > Options & settings: > 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 > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org >
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