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--></style></head><body bgcolor="white" lang="EN-US" link="blue" vlink="purple"><div class="WordSection1"><p class="MsoNormal"><span style="color:windowtext">Hi Gary and All –</span></p><p class="MsoNormal"><span style="color:windowtext"> </span></p><p class="MsoNormal"><span style="color:windowtext">We looked into the EcoGen unit, but the 6kW is discontinued and the 15kW EcoGen is not rated to be sold in California. Bummer.</span></p><p class="MsoNormal"><span style="color:windowtext"> </span></p><p class="MsoNormal"><span style="color:windowtext">Speaking of California, do any of you know about the CARB compliance issues on selecting a generator for an offgrid renewable project? We had one generator rep tell us that only a Tier 4F CARB generators are legal for use with offgrid in California, but I can’t find anything online to clarify. Since this project is in the National Parks, we need to make sure we don’t have any compliance issues. If anyone knows anything about what kind of CARB compliance is or isn’t required, I’d love to hear about it.</span></p><p class="MsoNormal"><span style="color:windowtext"> </span></p><p class="MsoNormal"><span style="color:windowtext">Cheers! </span></p><p class="MsoNormal"><span style="color:windowtext"> </span></p><p class="MsoNormal"><span style="color:windowtext">August</span></p><p class="MsoNormal"><span style="color:windowtext"> </span></p><div><div style="border:none;border-top:solid #e1e1e1 1.0pt;padding:3.0pt 0in 0in 0in"><p class="MsoNormal"><b><span style="color:windowtext">From:</span></b><span style="color:windowtext"> RE-wrenches [mailto:<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org">re-wrenches-bounces@lists.re-wrenches.org</a>] <b>On Behalf Of </b>Gary Willett<br><b>Sent:</b> Friday, June 16, 2017 7:58 AM<br><b>To:</b> <a href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a><br><b>Subject:</b> Re: [RE-wrenches] Generator choice for Sunny Island</span></p></div></div><p class="MsoNormal"> </p><p>AUGUST:</p><p>The Generac EcoGen is dual-fuel capable (NG or LP), comes in 6kW and 15kW versions, is 2-wire start, can be field-configured for either 120V or 240V. It's not "portable" as it does not have wheels. It's transportable though based on its footprint and weight. Also, it was specifically designed and warranteed for off-grid applications.</p><p>Regards,</p><p class="MsoNormal" style="margin-bottom:12.0pt">Gary Willett PE<br>Icarus Engineering LLC</p><div><p class="MsoNormal">On 6/16/17 9:36 AM, Kevin Pegg wrote:</p></div><blockquote style="margin-top:5.0pt;margin-bottom:5.0pt"><p class="MsoNormal"><span style="color:#1f497d">You could use a 2 -> 3 wire converter such as the Atkinson GSCM module that will take the 2 wire output from the SI and convert to 3-wire to control a gasoline generator such as the Honda EU7000 series, or Cummins/Onan makes a good line of gasoline generators. It may be very hard to find a gas generator that has 2 wire native remote start. That is more common with larger propane or diesel generators. </span></p><p class="MsoNormal"><span style="color:#1f497d"> </span></p><p class="MsoNormal"><span style="color:#1f497d">Kevin</span></p><p class="MsoNormal"><span style="color:#1f497d"> </span></p><div><div style="border:none;border-top:solid #e1e1e1 1.0pt;padding:3.0pt 0in 0in 0in"><p class="MsoNormal"><b>From:</b> RE-wrenches [<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org">mailto:re-wrenches-bounces@lists.re-wrenches.org</a>] <b>On Behalf Of </b>August Goers<br><b>Sent:</b> June-16-17 7:22 AM<br><b>To:</b> RE-wrenches <a href="mailto:re-wrenches@lists.re-wrenches.org"><re-wrenches@lists.re-wrenches.org></a><br><b>Subject:</b> Re: [RE-wrenches] Generator choice for Sunny Island</p></div></div><p class="MsoNormal"> </p><p class="MsoNormal">Thanks for the good feedback folks! </p><p class="MsoNormal"> </p><p class="MsoNormal">We are using a Sunny Island setup because we had access to a free Sunny Island and Sunny Boy being scrapped from another site. Otherwise I was definitely planning on going with a Outback DC coupled system. </p><p class="MsoNormal"> </p><p class="MsoNormal">I think the trick here is trying to find a portable generator that has a two-wire start option. I’m looking through the usual genny suppliers and nothing has presented itself so far. Anyway, I’ll keep looking and will check out Chris’ suggestion on the nexus controller and Generac propane unit as well.</p><p class="MsoNormal"> </p><p class="MsoNormal">FYI, here is a link to what the portal is like. It’s going in National Park land by the Golden Gate Bridge so I hope we can pull it together! <a href="http://www.sharedstudios.com/">http://www.sharedstudios.com/</a></p><p class="MsoNormal"> </p><p class="MsoNormal">August</p><p class="MsoNormal">Luminalt</p><p class="MsoNormal"> </p><p class="MsoNormal"> </p><p class="MsoNormal"><b>From:</b> RE-wrenches [mailto:<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org">re-wrenches-bounces@lists.re-wrenches.org</a>] <b>On Behalf Of </b>Chris Mason<br><b>Sent:</b> Friday, June 16, 2017 4:56 AM<br><b>To:</b> RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a>><br><b>Subject:</b> Re: [RE-wrenches] Generator choice for Sunny Island</p><p class="MsoNormal"> </p><div><p class="MsoNormal">To my limited mind, the whole 120V sunny island setup is a disaster. Why not install a DC coupled 8KW Outback Radian and solve all your problems. USe any 240V generator, although finding a 2 wire start gasoline unit may be hard. I would use a Nexus controller generac propane generator with propane tank, all mounted on the container. I would never design anything to use gasoline, it's too dangerous.</p></div><div><p class="MsoNormal"> </p><div><p class="MsoNormal">On Fri, Jun 16, 2017 at 7:19 AM, Matthew Sirum <<a href="mailto:matthewsirum@gmail.com" target="_blank">matthewsirum@gmail.com</a>> wrote:</p><blockquote style="border:none;border-left:solid #cccccc 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt"><p class="MsoNormal" style="margin-bottom:12.0pt">Greetings August,<br><br>Great thoughts and comments from Brian! I would also suggest speaking<br>with the generator manufacturers' tech/engineering folks regarding the<br>120VAC configuration and to confirm 2-wire start set up once you have<br>a brand and model or two in mind. Generator parts and service<br>availability in the region of the project may also drive brand<br>selection. If you need to maximize the inverter's battery charging<br>capabilities (depending on battery system charging requirements) you<br>may end up needing to look at generators in the 7.5 kW to 8.0 kW<br>capacity range to allow for headroom in generator output loading.<br><br>Also; I am curious how you arrived at an AC coupled design for this<br>project. I do not know any of the details or specific projects goals<br>you are working with, but I would potentially consider a DC coupled<br>system design... DC/DC charge controller(s) would keep the battery<br>system charged (and any DC loads operable) even if the Sunny Island<br>and/or Sunny Boy(s) have a failure or is taken offline. If most of<br>the AC loads are 120VAC I would consider keeping the inverter AC<br>output circuit 120VAC and install a dedicated transformer solely for<br>the 240VAC load.... Or perhaps consider a 120/240VAC inverter model.<br>Depending on the overall situation a DC coupled system could be more<br>resilient. The dedicated transformer for the 240VAC load could also<br>potentially help make the system more robust. Also; I have spoken<br>with a number of folks who have told me they wish the Sunny Island had<br>more/better features for generator integration. I'd like to hear more<br>from those who have plenty of experience designing and installing<br>systems with Sunny Islands and generators to learn what the current<br>thoughts and issues are.<br><br>I hope some of these thoughts may be helpful.<br><br>Best regards,<br><br>----MATT<br><br>Matthew Sirum<br>P.O. Box 1227<br>Greenfield, MA 01302-1227 USA<br>phone: +1.413.773.0611<br>email: <a href="mailto:MatthewSirum@gmail.com">MatthewSirum@gmail.com</a><br><br><br>-------- Original Message Below --------<br><br>[RE-wrenches] Generator choice for Sunny Island<br>August Goers august at <a href="http://luminalt.com" target="_blank">luminalt.com</a><br>Thu Jun 15 09:02:41 PDT 2017<br><br>Hi Wrenches, especially those of you who work on off-grid projects,<br><br>We have an upcoming off-grid project where we will be powering a storage<br>container with electronics in it. The loads are mostly 120 volt but there<br>is a 240 volt heat pump that might occasionally run. We’re AC coupling the<br>Sunny Island with a Sunny Boy PV inverter. So, we’ll be installing a<br>Outback PSX-240 autoformer to bump the Sunny Island’s output from 120 to<br>240 volt.<br><br>We need to select a generator for backup. We need a two-wire electric start<br>(in order to be controlled by the Sunny Island) and preferably a generator<br>that is okay just running 120 volt loads since the Sunny Islands input is<br>only 120 volt. Something in the 3 kVA -7 kVA range should be fine.<br><br>Does anyone have experience or ideas about what kind of two-wire start<br>generator we might select?<br><br>Thanks,<br><br>August<br><br>Luminalt<br>_______________________________________________<br>List sponsored by Redwood Alliance<br><br>List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.org</a><br><br>Change listserver email address & settings:<br><a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org" target="_blank">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a><br><br>List-Archive: <a href="http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html" target="_blank">http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html</a><br><br>List rules & etiquette:<br><a href="http://www.re-wrenches.org/etiquette.htm" target="_blank">www.re-wrenches.org/etiquette.htm</a><br><br>Check out or update participant bios:<br><a href="http://www.members.re-wrenches.org" target="_blank">www.members.re-wrenches.org</a></p></blockquote></div><p class="MsoNormal"><br><br clear="all"></p><div><p class="MsoNormal"> </p></div><p class="MsoNormal">-- </p><div><div><p class="MsoNormal">Chris Mason</p><div><div><p class="MsoNormal"><span style="font-size:10.0pt;color:#888888">NABCEP Certified Solar PV Installer™</span></p></div><div><p class="MsoNormal"><span style="color:#222222">Solar Design Engineer</span></p></div><div><p class="MsoNormal"><span style="font-size:10.0pt;color:#888888">Generac Generators Industrial technician</span></p></div></div><div><p class="MsoNormal"><span style="color:#888888"> </span></p></div><div><p class="MsoNormal"><a href="http://www.cometenergysystems.com" target="_blank">www.cometsolar.com</a></p></div><div><p class="MsoNormal">264.235.5670</p></div><div><p class="MsoNormal">869.662.5670</p></div><div><p class="MsoNormal">Skype: netconcepts</p></div></div></div></div><p class="MsoNormal"><br><br><br></p><pre>_______________________________________________</pre><pre>List sponsored by Redwood Alliance</pre><pre> </pre><pre>List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.org</a></pre><pre> </pre><pre>Change listserver email address & settings:</pre><pre><a href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a></pre><pre> </pre><pre>List-Archive: <a href="http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html">http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html</a></pre><pre> </pre><pre>List rules & etiquette:</pre><pre><a href="http://www.re-wrenches.org/etiquette.htm">www.re-wrenches.org/etiquette.htm</a></pre><pre> </pre><pre>Check out or update participant bios:</pre><pre><a href="http://www.members.re-wrenches.org">www.members.re-wrenches.org</a></pre><pre> </pre></blockquote><p class="MsoNormal"> </p></div></body></html>