I haven't looked lately but check out hardy diesels, 16 kW three cylinder Perkins
I have some customers that are real happy with them they have enough power to run charging and the household loads of the same time The price only hurts for a little while Bob Ellison > On Apr 9, 2015, at 10:56 AM, Dana <[email protected]> wrote: > > I agree but full load charging usually only lasts but a few minutes as the > inverter charge rate drops readily as voltage rises. 8300 watt -10,000 watts > or 13000 watts the point is why we are installing air cooled throw away > generators that run so fast & hot that they need to be replaced in 2,000 > hours, not to mention the fuel consumed at 80 MPH? > > Is there a slow speed (1200-1800 rpm) water cooled 8-13 KW generator out > there? > > ---------------------------------------------------------------------------- > Dana Orzel > Great Solar Works, Inc - NABCEP # 051112-136 > E - [email protected] - Web - solarwork.com > O - 970.626.5253 C - 208.721.7003 > "Responsible Technologies for Responsible People since 1988" > P Please consider the environment before printing this email. > > > From: Jerry Shafer [mailto:[email protected]] > Sent: Wednesday, April 08, 2015 7:02 PM > To: [email protected]; RE-wrenches > Subject: Re: [RE-wrenches] Question on Back up generators > > We don't install anything smaller then a 13 k its air cooled but works well, > as far as the numbers you have, Mine are somewhat different I use max > potential load and max potential charge as when the batteries are low the > genny must not only supply the home but also charge the bank back up at a > reasonable rate, so if the loads are high and the genny only has enough to > maintain that load then what about the batteries plus I only use 75% of the > genny rating for optimum or improved duty cycle. This is only me and I am > sure every shop has there own math. > Jerry > > On Wed, Apr 8, 2015 at 11:23 AM, Dana <[email protected]> wrote: > Hey All – > > I just got off of a phone call with my Onan generator supplier. Last > conversation with Kohler was the same story basically. > > I was informed that their smallest water cooled generator, the RS22 (22 KW) > is now no longer “rated “for off grid. They actually called me to confirm > that this generator was for backup power to a utility inter connected house. > Tier 4 generators in the EPA CFR 40 is the Federal code what covers this, & > you are allowed 100 hours of run time for standby power and maintenance per > year. > Q - Why am I using ridiculous sized generators for something that an 82-8300 > watt generator does just fine? > A - The EPA current requirements, a shrinking economy, & manufacturers that > have to meet very expensive air quality compliance. > The Penalty - If you get caught running a “standby power only” generator the > fine is now $39,000 per day! > Now I am far from a polluting kind of individual and all for air quality but > this is getting the best of us. The 13KW air cooled generators are only good > for 2000 hours, & the water cooled go 20 years of moderate usage but cost a > boat load. I hate having the “Generator” talk with a new client they look at > me like I am crazy. So the air cooled units are basically throwaways and the > 22KW units are way more than we need and what a client needs to spend money > on, unless you are at 10,000 ft el. > > If you figure 30 amps/120 VAC input per inverter +/- x 2 = 7.2KW plus say > 10-15% fudge or elevation factors would require an 8200-8300 watt generator. > Air cooled at 3600 RPM = 80 MPH & 1800 RPM = 40 MPH. Even if the generator > were a bit smaller, ran slow (1200-1800 rpm) and ran a bit longer that would > be acceptable. > So, why are we installing even 13KW air cooled or 22 KW water generators? > There is a business opportunity here folks. > > What are you all installing? > Why? > Is it reliable? > Would you use it on your house? > > Thanks for sharing all the wisdom and knowledge. > > ---------------------------------------------------------------------------- > Dana Orzel > Great Solar Works, Inc - NABCEP # 051112-136 > E - [email protected] - Web - solarwork.com > O - 970.626.5253 C - 208.721.7003 - No FAX Line > "Responsible Technologies for Responsible People since 1988" > P Please consider the environment before printing this email. > > > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: [email protected] > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/[email protected]/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: [email protected] > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/[email protected]/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org >
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