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We have started doing away with the ATS all together. Generac recently released a FW code you can enter to indicate to the generator you want it to Start/Stop with 2-wire configuration. A generator that size I would feed directly into the SolArk and let the
SolArk Start/Stop function. This will increase the "Up Time" of the inverter as it will always have a secondary power source it can call on when there's a low SOC.<span id="ms-outlook-android-cursor"></span>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> RE-wrenches <re-wrenches-bounces@lists.re-wrenches.org> on behalf of William Miller <william@millersolar.com><br>
<b>Sent:</b> Thursday, June 17, 2021 9:11:30 AM<br>
<b>To:</b> RE-wrenches <re-wrenches@lists.re-wrenches.org><br>
<b>Subject:</b> Re: [RE-wrenches] Sol-Ark 12k w/ Generac Transfer Switch</font>
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<div dir="auto">Friends:
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<div>I dislike jury-rigging a generator loss-of-grid start signal to a two-wire start. If the inverters need to be shut down for service or happen to shut down on their own, the generator will start. Not a good design. <br>
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<div dir="ltr">William Miller
<div>
<div>www.millersolar.com</div>
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<blockquote type="cite">On Jun 17, 2021, at 6:48 AM, Dave Tedeyan <dave@sungineersolar.com> wrote:<br>
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<div dir="ltr">\ufeff
<div dir="ltr">Hi Rick,
<div>I have a similar situation with a GE transfer switch, but am curious to hear what others have to say. My assumption was that the switch transfers based on loss of 240V from the grid. But I believe (at least with the GE generator) that the transfer switch
sends a two wire start signal to the inverter when the transfer switch loses the 240V signal. My plan was to rewire that start signal to the Sol-Ark inverter, but keep the transfer switch as the main service point to prevent any kind of backfeeding to the
grid.</div>
<div>Cheers,</div>
<div>Dave</div>
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<div dir="ltr" class="x_gmail_attr">On Thu, Jun 17, 2021 at 9:41 AM <a href="mailto:rick@solshineenergy.com">
rick@solshineenergy.com</a> <<a href="mailto:rick@solshineenergy.com">rick@solshineenergy.com</a>> wrote:<br>
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<blockquote class="x_gmail_quote" style="margin:0px 0px 0px 0.8ex; border-left:1px solid rgb(204,204,204); padding-left:1ex">
<div style="">Wrenches,
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<div>I\u2019m looking to tie in a Generac Powerpact 7.5kW generator with transfer switch to a Sol-Ark 12kW. The Sol-Ark has a two wire start (NO or NC) capability, however, the Generac transfer switch operates on loss of 240V. Is my only option to use a relay driven
by the two wire start to drop 240V to the transfer switch? </div>
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<div>Thank you,</div>
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rick brown<br>
SolShine Energy Alternatives, LLC<br>
Electrical & Solar Contracting Services<br>
<a href="http://www.SolShineEnergy.com" target="_blank">www.SolShineEnergy.com</a><br>
Check, Virginia 24072<br>
Office: 540.235.3095<br>
Mobile: 540.808.9502<br>
<br>
VA Class A Contractor Lic# 2705147660<br>
VA Master Electrician Lic# 2710062762<br>
VA Alternative Energy Systems Installer <br>
NABCEP Certified PV Installation Professional 110112-21</div>
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-- <br>
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<div dir="ltr" style="color:rgb(136,136,136)"><b>Dave Tedeyan, PE</b></div>
<div dir="ltr" style="color:rgb(136,136,136)"><img src="http://sungineersolar.com/wp-content/uploads/2019/08/Sungineer-Logo-1.png" alt="Sungineer Solar" width="200" height="50"><b><br>
</b>
<div>1653 Slaterville Road, Ithaca, NY 14850</div>
<div>Cell: 607-288-2898</div>
<div><a href="http://www.sungineersolar.com/" target="_blank" style="color:rgb(17,85,204)">www.sungineersolar.com</a></div>
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