<div dir="ltr"><div dir="ltr"><div><div><span class="gmail_default" style="font-family:arial,helvetica,sans-serif">There are particular challenges with running new conductors to the roof, and I don't have 8 wires to work with, unfortunately. This is one of the reasons I am planning a single string at 600V</span><br clear="all"></div><span class="gmail-im" style="color:rgb(80,0,80)"><div><div dir="ltr" class="gmail_signature"><br class="gmail-Apple-interchange-newline"></div></div></span></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></div></div><br></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Fri, Apr 18, 2025 at 8:34 PM MDElectricSolar 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="auto">You could swap it out with a FM-80 and do 4 strings of two modules in series.<div><br id="m_2028254409311478660lineBreakAtBeginningOfSignature"><div dir="ltr"><div>Michael D Nelson</div><div>MD Electric & Solar, Inc.</div><div>707-684-0064 mobile</div><div>707-884-1862 office</div><div><a href="http://www.mdelectricsolar.com" target="_blank"><span id="mt-tracked-link_0_1745268887845" style="color:red"></span>www.mdelectricsolar.com</a></div><div><a href="http://www.facebook.com/mdelectricandsolar" target="_blank"><span id="mt-tracked-link_0_1745268887848" style="color:red"></span>www.facebook.com/mdelectricandsolar</a></div><br></div><div dir="ltr"><br><blockquote type="cite">On Apr 18, 2025, at 6:40 AM, Christopher Warfel via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank">re-wrenches@lists.re-wrenches.org</a>> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr">
<p>Hi Jason, I have the same set up. These are the array and cc
breakers. Although we are having a power outage right now, the DC
shunt is doing its usual crazy reading from time to time. Chris<br>
</p>
<p><br>
</p>
<p></p><div><2b1DSIMNoJXo0FJ2.jpg></div><p></p>
<div>On 4/18/2025 8:35 AM, Jason Szumlanski
via RE-wrenches wrote:<br>
</div>
<blockquote type="cite">
<div dir="auto">Hi all,
<div dir="auto"><br>
</div>
<div dir="auto">I have a client that wants to replace a PV array
that is aging and hurricane damaged. It's a rather old array
of unknown rating connected to a MX60 via a Flexware 500 DC
enclosure (48V). </div>
<div dir="auto"><br>
</div>
<div dir="auto">I'm planning to install eight REC 450 Alpha Pure
RX in series. I'm going to need a 600 volt charge controller.
I'm considering a Midnite Hawk's Bay unless someone has a
better idea. </div>
<div dir="auto"><br>
</div>
<div dir="auto">The customer sent me this crude image. I can see
the two inverter breakers on the right. I am wondering what
the two breakers on the left are. I'm thinking one of these is
an 80 amp breaker for the output of the MX60. The other one is
probably a PV input breaker of unknown rating. I would need to
change these to accommodate the new charge controller. The
Midnite Hawk's Bay 90 requires a 125A output breaker. Does
anyone know if there is an Outback breaker of this physical
size and 125A rating to plug into this DC FlexWare enclosure?
For the PV input, I should be able to get whatever breaker is
required for this single string of PV. </div>
<div dir="auto"><br>
</div>
<div dir="auto">I'm all ears if there is an easier way to go
about this with approximately 3,600W of new PV.</div>
<div dir="auto"><br>
</div>
<div dir="auto">Thanks in advance!</div>
<div dir="auto"><br>
</div>
<div dir="auto">Jason Szumlanski </div>
<div dir="auto">Florida Solar Design Group </div>
</div>
<br>
<fieldset></fieldset>
<pre>Check out or update participant bios:
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</pre>
</blockquote>
<pre cols="72">--
Christopher Warfel, PE
ENTECH Engineering, Inc.
PO Box 871, Block Island, RI 02807
(401) 447-5773</pre>
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