<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div dir="ltr"></div><div dir="ltr">I don’t know if your customer will care but I’ve had numerous phone calls about why was the generator running when the bats were full or something similar. Of course it was the exercise timer. </div><div dir="ltr"><br></div><div dir="ltr">I don’t know your layout but if the inverter room is something people visit vs the generator, then if it’s in there I presume there is a led light on it. </div><div dir="ltr">Anyway just trying to keep clients informed as to what’s happening so they are empowered and I don’t get phone calls. </div><div dir="ltr"><br></div><div dir="ltr">Jay</div><div dir="ltr"><br><blockquote type="cite">On Apr 8, 2026, at 2:11 PM, Jason Szumlanski via RE-wrenches <re-wrenches@lists.re-wrenches.org> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr"><div dir="ltr"><div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Great feedback! I should pot mine because I plan to put it in the generator control compartment.</div></div><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><br><br><div><font color="#333333" face="Roboto, RobotoDraft, Helvetica, Arial, sans-serif"> </font></div><div><font color="#333333" face="Roboto, RobotoDraft, Helvetica, Arial, sans-serif"><br></font></div></div></div></div><br></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Wed, Apr 8, 2026 at 3:57 PM William Bryce via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div>Jason</div><div><br></div>I have a 3D printed nylon case and fully Potted the shelly in it for outdoor use. One has been operating in full FL sun and rain outdoors with zero issues.<div>Pretty easy to make the Shelly 100% long living in the FL weather. See attached.</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Apr 8, 2026 at 3:41 PM Jason Szumlanski via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank">re-wrenches@lists.re-wrenches.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Update:</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Thanks to those of you who suggested various AGS relay devices. They all seem a bit <span style="border-style:none;background:0% 0% repeat">overkill</span> and costly for simply connecting two wires <span style="border-style:none;background:0% 0% repeat">together </span>once a week, but they are all great suggestions nonetheless. I confirmed that a little $18 Shelly 1 Gen4 device will do what I need it to do. I'm not sure how it will hold up in various environmental conditions, but we will see!</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Also, I just heard from my EG4 technical rep. He pointed out that <span style="border-style:none;background:0% 0% repeat">there is a generator exercise option for the FlexBOSS inverters, so</span> if the two-wire start is connected to the master inverter, it would presumably work to exercise the generator; however, <span style="border-style:none;background:0% 0% repeat">there are no SOC start/stop parameters available for the inverters</span> when a GridBOSS is connected. <span style="border-style:none;background:0% 0% repeat">I suppose if</span> you connect both the GridBOSS and FlexBOSS two-wire start terminals in parallel, <span style="border-style:none;background:0% 0% repeat">it might work where each device can</span> fulfill a separate function, but I would have to test that out.</div><br clear="all"></div><div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Regardless, it's pretty shocking that they missed the exercise function on the GridBOSS, which is designed to be a single point <span style="border-style:none;background:0% 0% repeat">of generator connection for</span> all inverters and to remotely control generator functions. The GridBOSS <span style="border-style:none;background:0% 0% repeat">has been out for a while, too, and it</span> hasn't been fixed. They have to know about this. </div><br></div><div><div dir="ltr" class="gmail_signature"><div dir="ltr"><br>Jason Szumlanski<div><span style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px">Principal Solar Designer | Florida Solar Design Group</span><br style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px"><span style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px">NABCEP Certified Solar Professional (PVIP)</span><br style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px"><span style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px">Florida State Certified Solar Contractor CVC56956</span></div><div><font color="#333333" face="Roboto, RobotoDraft, Helvetica, Arial, sans-serif">Florida Certified Electrical Contractor EC13013208</font></div><div><font color="#333333" face="Roboto, RobotoDraft, Helvetica, Arial, sans-serif"> </font></div><div><font color="#333333" face="Roboto, RobotoDraft, Helvetica, Arial, sans-serif"><br></font></div></div></div></div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Apr 7, 2026 at 5:42 PM Jason Szumlanski <<a href="mailto:jason@floridasolardesigngroup.com" target="_blank">jason@floridasolardesigngroup.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div dir="ltr"><div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">Seriously. It shouldn't be this hard. The site I just got burned on is grid-tied, so generator exercise is even more important since it will likely almost never run otherwise.</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">On a good note, Midnite released firmware for their AIO that allows you to put the Gen on the Grid port for off-grid and still use the AGS function, but it is limited. At least there is an exercise cycle and run time, but no amps start and limited voltage start options.</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">EG4 <span style="border-style:none;background:0% 0% repeat">does have</span> manual start/auto off (what they call <span style="border-style:none;background:0% 0% repeat">exercise),</span> and cooldown, but otherwise it's limited to V or SOC start/stop. </div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></div></div><div><div dir="ltr" class="gmail_signature"><div dir="ltr"><br>Jason Szumlanski<div><span style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px">Principal Solar Designer | Florida Solar Design Group</span><br style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px"><span style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px">NABCEP Certified Solar Professional (PVIP)</span><br style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px"><span style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px">Florida State Certified Solar Contractor CVC56956</span></div><div><font color="#333333" face="Roboto, RobotoDraft, Helvetica, Arial, sans-serif">Florida Certified Electrical Contractor EC13013208</font></div><div><font color="#333333" face="Roboto, RobotoDraft, Helvetica, Arial, sans-serif"> </font></div><div><font color="#333333" face="Roboto, RobotoDraft, Helvetica, Arial, sans-serif"><br></font></div></div></div></div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Apr 7, 2026 at 4:51 PM jay via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank">re-wrenches@lists.re-wrenches.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div>I really don’t know why AGS has been so hard with all these new inverter companies. It is a massive weak point for true offgrid.<div>I can hear the howls now, but most people want AGS. Regardless many of those features below are also useful for manual start applications. <br><div><br></div><div>I mean Trace had all this back in 1995 and nothing has changed in terms of what we want generator back up to do.</div><div><br></div><div>Is there a AIO available today that have anything close to the list below?</div><div><br></div><div>2 and 3 wire start</div><div>24 hr, 2 hr, 15 minute volt/start time</div><div>load start/start</div><div>quiet time</div><div>run time</div><div>exercise period/time</div><div>voltage input window</div><div>hz input window</div><div>manual start/stop</div><div>manual start/auto shut off</div><div>warm up</div><div>cool down</div><div>pre crank</div><div>max crank</div><div>post crank</div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div><div><br><blockquote type="cite"><div>On Apr 7, 2026, at 1:25 PM, Jason Szumlanski via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank">re-wrenches@lists.re-wrenches.org</a>> wrote:</div><br><div><div dir="ltr"><div><div style="font-family:arial,helvetica,sans-serif">Here we go again with a manufacturer providing poor and misleading documentation. The EG4 GridBOSS manual says:</div><div style="font-family:arial,helvetica,sans-serif"><br></div><div style="font-family:arial,helvetica,sans-serif"><i>The GridBOSS should use start/stop relay 1 in the normally open connection. Start/stop relay 1 can be controlled manually or by battery SOC/voltage logic within the EG4® Monitor Center. The generator can also be configured with warm-up, cool-down, <b>and exercise time</b>.</i></div><br clear="all"></div><div><div style="font-family:arial,helvetica,sans-serif">I just learned that there is, in fact, no automatic scheduled generator exercise feature on the GridBOSS. This is a real problem because many generator controls disable the onboard exercise function when remote-start capability is enabled. </div><br></div><div><div style="font-family:arial,helvetica,sans-serif">So what is "exercise time" in EG4's world? Apparently, <span style="border-style:none;background:0% 0% repeat">that</span> means you can set a duration for the generator to run when you <span style="border-style:none;background:0% 0% repeat">MANUALLY start the generator</span> from the app. </div><br></div><div><div style="font-family:arial,helvetica,sans-serif">Hope this saves someone else a big headache, hours of research, and clueless tech support.</div><div style="font-family:arial,helvetica,sans-serif"><br></div><div style="font-family:arial,helvetica,sans-serif">Any thoughts <span style="border-style:none;background:0% 0% repeat">on</span> a simple external relay in parallel to accomplish this function? I was thinking <span style="border-style:none;background:0% 0% repeat">about a Shelly connected </span>to a smart load for power in the GridBOSS. It just needs to be a programmable relay to close on a schedule. How reliable are Shelly relays for scheduled tasks?</div><br></div><div><div dir="ltr" class="gmail_signature"><div dir="ltr"><br>Jason Szumlanski<div><span style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px">Principal Solar Designer | Florida Solar Design Group</span><br style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px"><span style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px">NABCEP Certified Solar Professional (PVIP)</span><br style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px"><span style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px">Florida State Certified Solar Contractor CVC56956</span></div><div><font color="#333333" face="Roboto, RobotoDraft, Helvetica, Arial, sans-serif">Florida Certified Electrical Contractor EC13013208</font></div><div><font color="#333333" face="Roboto, RobotoDraft, Helvetica, Arial, sans-serif"> </font></div><div><font color="#333333" face="Roboto, RobotoDraft, Helvetica, Arial, sans-serif"><br></font></div></div></div></div></div>
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