<div dir="ltr"><div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">I have a client <span class="Asgive ng" style="border-style:none;background:none">that</span> said she purchased the DPU directly from EcoFlow with their smart home panel. They sent out a subcontractor from across the state, who installed the smart panel without a permit, replacing the entire main distribution panel. The workmanship was passable, but I told her I'm not touching it until she demands they <span class="Asgive ng" style="border-style:none;background:none">go back and </span>get a permit.</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">Here's my plan for these <span class="Q6ibn ng" style="border-style:none;background:none">situations...</span> I'm telling people they made a mistake. I <span class="Q6ibn ng" style="border-style:none;background:none">ask</span> them to purchase a single Powerwall 3 with a Gateway 3 installed upstream of the EcoFlow <span class="Asgive ng" style="border-style:none;background:none">panel,</span> with <span class="Asgive ng" style="border-style:none;background:none">however many</span> solar panels they want. If the Powerwall battery <span class="Asgive ng" style="border-style:none;background:none">is exhausted</span> during an outage, the DPU will take over <span class="Asgive ng" style="border-style:none;background:none">with</span> the smart panel. The sun comes up in the morning, the Powerwall charges and turns on, and the DPU turns off and starts charging from the Powerwall. The downside is that you need to turn down the charge rate on the DPU, or the user needs to manage it closely.</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">At least they get to use their DPU's capacity <span class="Asgive ng" style="border-style:none;background:none">and get</span> it charged by solar during a grid outage, albeit indirectly.</div><br clear="all"></div><div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">These things are simply not made to work within <span class="Asgive ng" style="border-style:none;background:none">the code framework we have,</span> and I question their safety. <span class="Asgive ng" style="border-style:none;background:none">450V</span> DC flexible cords to a charge controller on wheels is a recipe for disaster.</div><br></div><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><br>Jason Szumlanski<br>Principal Solar Designer | Florida Solar Design Group<br>NABCEP Certified Solar Professional (PVIP)<br>Florida State Certified Solar Contractor CVC56956<br>Florida Certified Electrical Contractor EC13013208<br></div><div><br></div><div><br></div></div></div></div><br></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Tue, Apr 28, 2026 at 4:26 PM Chris Sparadeo <<a href="mailto:sparadeo.chris@gmail.com">sparadeo.chris@gmail.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">I echo Jason's frustration with this product's compliance. The DPU has been blacklisted by certain AHJs in LA county and I have heard whispers of investigations into the validity of this product's UL listing. Previous models did not include proper labels or means for emergency shut down of the ESS unit. I do not see a code compliant way to integrate solar into this unit. Last I checked, EcoFlow was pushing installers and customers to avoid permitting and interconnection applications because of its "portable nature" but this product is clearly under the purview of NFPA 855. It's a mess and I would suggest avoiding the DPU, especially in this specific PV integration application. </div><div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Apr 28, 2026 at 3:59 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">That's not where the problems end. It <span style="border-style:none;background:none">doesn't have</span> arc fault protection. I get this phone call at least once a week. It's pretty frustrating - people buy these portable units and think we can just slap a couple of panels on the roof, and they're good to go. That's how the marketing makes it sound.</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"><a href="https://floridasolardesigngroup.com/ecoflow-delta-pro-ultra-x-not-suitable-for-rooftop-solar" target="_blank">https://floridasolardesigngroup.com/ecoflow-delta-pro-ultra-x-not-suitable-for-rooftop-solar</a></div><br clear="all"></div><div><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><br>Jason Szumlanski<br>Principal Solar Designer | Florida Solar Design Group<br>NABCEP Certified Solar Professional (PVIP)<br>Florida State Certified Solar Contractor CVC56956<br>Florida Certified Electrical Contractor EC13013208<br></div><div><br></div><div><br></div></div></div></div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Apr 27, 2026 at 1:50 PM Howie Michaelson 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 style="font-family:verdana,sans-serif" class="gmail_default">Hi All,</div><div style="font-family:verdana,sans-serif" class="gmail_default">I have a potential client who currently has an <a href="https://www.ecoflow.com/us/delta-pro-ultra" target="_blank">EcoFlow DELTA Pro Ultra</a> inverter installed in his house for battery backup.  He wants to install roof-mounted PV. I don't see how to connect PV into the Inverter/Charger using EMT for code compliance.  Has anyone done something similar?  Can anyone think of a code-compliant method to bring PV into this setup? </div><br clear="all"></div><div><div dir="ltr" class="gmail_signature"><div dir="ltr">Howie Michaelson<br></div></div></div></div>
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