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--></style></head><body lang="EN-US" link="blue" vlink="purple"><div class="WordSection1"><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#1f497d">Dana:</span></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#1f497d">With all due respect, the Flexmax 100 GFDI fuse is not that same as either of the Fluke 87 fuses. </span></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#1f497d"> </span></p><p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo1"><span style="font-family:Symbol;color:#1f497d"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman""> </span></span></span><span style="font-family:"Verdana","sans-serif";color:#1f497d">Per the Flemax 100 AFCI <span class="EmailStyle17"><a href="https://old.outbackpower.com/downloads/documents/charge_controllers/flexmax_100_afci/fm100_afci_manual.pdf">manual</a></span> June 2022, Revision C, page 20, the fuse is “600 Vdc, 0.75 Adc, OutBack Power P/N SPARE-045”. If you look closely at the photograph the fuse shown is 1 amp. My recollection is the fuse is 1 amp.</span></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#1f497d"> </span></p><p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo1"><span style="font-family:Symbol;color:#1f497d"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman""> </span></span></span><span style="font-family:"Verdana","sans-serif";color:#1f497d">Per <a href="https://www.fluke.com/en-us/products/accessories/fuses">Fluke</a> the fuses are 11A @ 1000V and 440 mA @ 1000V. The photo of the 11 amp fuse shows a Bussman DMM-11AR. The photo of the 440 mA shows a Little Fuse Fast-acting 44/100A</span></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#1f497d">Unfortunately neither manufacturer gives the full specs for the fuses, at least not that I can readily find. The fuse activation timing (fast or delay) is an important factor. I am sure somewhere on the web are cross-reference numbers to major fuse manufacturers. Above I cite what is seen in photographs but not specifically named in any specification table.</span></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#1f497d">All of these fuses are expensive. This is why if someone uses my 87 and leaves the red lead plugged into either amp port they owe me a beer, and if a fuse is blown, a replacement.</span></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#1f497d">William</span></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#1f497d"> </span></p><div><p class="MsoNormal"><span style="font-family:"Arial","sans-serif";color:#1f497d">Miller Solar</span></p><p class="MsoNormal"><span style="font-family:"Arial","sans-serif";color:#1f497d">17395 Oak Road, Atascadero, CA 93422</span></p><p class="MsoNormal"><span style="font-family:"Arial","sans-serif";color:#1f497d">805-438-5600</span></p><p class="MsoNormal"><span style="font-family:"Arial","sans-serif";color:#1f497d"><a href="http://www.millersolar.com/"><span style="color:blue">www.millersolar.com</span></a></span></p><p class="MsoNormal"><span style="font-family:"Arial","sans-serif";color:#1f497d">CA Lic. 773985</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p></div><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:#1f497d"> </span></p><div><div style="border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0in 0in 0in"><p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> 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>Dana Orzel via RE-wrenches<br><b>Sent:</b> Thursday, March 13, 2025 6:31 AM<br><b>To:</b> RE-wrenches<br><b>Cc:</b> Dana Orzel<br><b>Subject:</b> Re: [RE-wrenches] Arc Fault problem in FM100</span></p></div></div><p class="MsoNormal"> </p><p class="MsoNormal">It’s the same fuse as in a Flluke 87 <span style="font-family:"Segoe UI Symbol","sans-serif"">😎</span></p><div><p class="MsoNormal">Dana Orzel - <a href="mailto:dana@solarwork.com">dana@solarwork.com</a> - 208.721.7003</p></div><div><p class="MsoNormal"><br><br></p><p class="MsoNormal" style="margin-bottom:12.0pt">On Mar 12, 2025, at 8:13 PM, John Blittersdorf via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a>> wrote:</p></div><blockquote style="margin-top:5.0pt;margin-bottom:5.0pt"><div><p class="MsoNormal"><span style="font-family:"Tahoma","sans-serif""></span> </p><div><p class="MsoNormal">Dana, I'm the one feeling like an idiot. Turns out the ground fault fuse was blown in a brand new controller. I did't have my </p><div><p class="MsoNormal">meter with me to test the fuse and had to go back the next day. I had a good fuse in the 2nd controller not yet hooked up so</p></div><div><p class="MsoNormal">I could have borrowed that one and had the system up and running. Only cost me 4 hours of drive time by not having my meter. </p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">John Blittersdorf </p></div><div><p class="MsoNormal"> </p></div></div><p class="MsoNormal"> </p><div><div><p class="MsoNormal">On Sat, Mar 8, 2025 at 11:32 AM Dana Orzel via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a>> wrote:</p></div><blockquote style="border:none;border-left:solid #cccccc 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in"><div><div><div><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:14.0pt;font-family:"Century Gothic","sans-serif"">Pull the ground jumper in the FM100.</span></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:14.0pt;font-family:"Century Gothic","sans-serif"">Double check all terminal connections in the Power center related to the FM100. Do the pull test carefully,</span></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:14.0pt;font-family:"Century Gothic","sans-serif"">I once missed tightening a neutral that was passing current & then not. I finally heard a slight crackle sound as I turned the array input & battery breaker at the same time to on, did the pull test [moved wires & the Fm100 lite up], then Felt like an idiot! Tightened the neutral & all good.</span></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:14.0pt;font-family:"Century Gothic","sans-serif""> </span></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Century Gothic","sans-serif"">_________________________________________________________</span></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Century Gothic","sans-serif";color:#275317">Dana Orzel GREAT SOLAR WORKS! </span></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Century Gothic","sans-serif";color:#275317">C – 208.721.7003 E – <a href="mailto:dana@solarwork.com" target="_blank"><span style="color:#275317;text-decoration:none">dana@solarwork.com</span></a></span></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Century Gothic","sans-serif";color:#275317">W - www. <a href="http://greatsolarworks.com" target="_blank">greatsolarworks.com</a> <a href="http://www.solarwork.com/" target="_blank"><span style="color:#275317;text-decoration:none">www.solarwork.com</span></a></span></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><i><u><span style="font-family:"Century Gothic","sans-serif";color:#275317">“Responsible Technologies for Responsible People since 1988!”</span></u></i></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> </p></div></div><p class="MsoNormal" style="margin-bottom:12.0pt">_______________________________________________<br>List sponsored by Redwood Alliance<br><br>Pay optional member dues here: <a href="http://re-wrenches.org" target="_blank">http://re-wrenches.org</a><br><br>List Address: <a href="mailto:RE-wrenches@lists.re-wrenches.org" target="_blank">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>There are two list archives for searching. 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