HI Allan, I'm with the folks who have said the following.
1. larger. 15kW-25kW 2. water cooled 3. prime rated 4. brand is one that there is a local repair/warranty supplier. Onan/Kohler are the most common in this size that I know of. The larger 15kW water cooled units I've had a chance to work around are pretty impressive machines. Yes its larger than you need and even if you don't increase the charging, its going to be worth it. Good luck let us know what you decide/find. Jay Peltz Power On Jan 9, 2012, at 7:59 PM, Allan Sindelar wrote: > Wrenches: > We have cautiously agreed to take on a substantial upgrade and rehabilitation > of a poorly designed 48V off-grid system. Our upgrade will include a > substantial array addition, battery replacement, and charge controller/safety > disconnect replacement. But the immediate need is for a generator. The 6 year > old system has worn out two Onan residential standby generators; the second > one just now (at winter solstice) has failed completely. > > We expect to keep the two SW5548 inverters. The site is at 7,800' elevation. > The fuel must be LP. The customer is willing to pay for a high-quality unit. > We expect only to specify or recommend the unit, but not resell it, so > there's no profit motivation involved; we just want the best solution.. > > I am looking for recommendations of a low-speed, liquid-cooled, commercial- > or industrial-grade LP generator, of at least 12kW and preferably around > 15kW, with a good reputation for long-term reliability, and that is not > designed for home standby use (with phantom-load heaters and controls). It > will be located outdoors, so must have a weather enclosure. > > I occasionally am asked to answer this same question by Home Power > readers, who assume I know the answer because I wrote a primer on generators > for HP awhile back. Truth is, I don't have any good recommendations in this > size range, and I'm really hoping that some of you experienced off-grid > Wrenches who have done larger systems can help here. > > Thank you, > Allan > -- > Allan Sindelar > al...@positiveenergysolar.com > NABCEP Certified Photovoltaic Installer > NABCEP Certified Technical Sales Professional > New Mexico EE98J Journeyman Electrician > Positive Energy, Inc. > 3201 Calle Marie > Santa Fe, New Mexico 87507 > 505 424-1112 > www.positiveenergysolar.com > > > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > 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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