<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="-ms-word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div><div style="font-family: Calibri,sans-serif; font-size: 11pt;">Two things,<br>Combined OCPD sizing is based on the output current of the inverters, not the individual OCPD values.<br>And in most 3 phase systems you will have a square root of 2 to factor into your calculations.<br><br>Sincerely,<br>Glenn Burt<br>Sent from my 'smart' phone so please excuse grammar and typos.</div></div><div dir="ltr"><hr><span style="font-family: Calibri,sans-serif; font-size: 11pt; font-weight: bold;">From: </span><span style="font-family: Calibri,sans-serif; font-size: 11pt;"><a href="mailto:amfrish@aeonsolar.com">Allen Frishman</a></span><br><span style="font-family: Calibri,sans-serif; font-size: 11pt; font-weight: bold;">Sent: </span><span style="font-family: Calibri,sans-serif; font-size: 11pt;">10/24/2015 7:50</span><br><span style="font-family: Calibri,sans-serif; font-size: 11pt; font-weight: bold;">To: </span><span style="font-family: Calibri,sans-serif; font-size: 11pt;"><a href="mailto:re-wrenches@lists.re-wrenches.org">RE-wrenches</a></span><br><span style="font-family: Calibri,sans-serif; font-size: 11pt; font-weight: bold;">Subject: </span><span style="font-family: Calibri,sans-serif; font-size: 11pt;">[RE-wrenches] Combined Inverter Fuse sizing</span><br><br></div>Wrencher's,<div>Quick question regarding sizing the fuse for a combined group of inverters. If I have six 10KW three phase inverters each with a max AC current of 30A they each require a 3 pole 40 A breaker. If I then take the combined output of the AC combiner panel I see two possible options for sizing the combined fuse size. </div><div><br></div><div>6 inverters x 40A breakers each = 240A so I need to use a 250A fuse</div><div>6 Inverters x 30A max output each = 180A x 1.25 = 225A Fuse</div><div><br></div><div>Seems like both are acceptable options since all wire will be protected.</div><div><br></div><div>All feedback is appreciated.<br><div>
<span class="Apple-style-span" style="color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; white-space: normal; border-collapse: separate; orphans: 2; widows: 2; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;"><div><p class="MsoNormal"><i><span style="color: black; font-size: 10.5pt;">Al Frishman</span></i><span style="color: black; font-size: 13.5pt;"><br></span><span style="color: rgb(3, 1, 0); font-size: 13.5pt;">Aeon</span><span style="color: rgb(255, 151, 0); font-size: 13.5pt;">Solar</span><span style="color: black; font-size: 13.5pt;"></span></p><p class="MsoNormal"><i><span style="color: black; font-size: 10.5pt;"><a href="tel:%28917%29%20699-6641" target="_blank" value="+19176996641">(917) 699-6641</a> - cell</span></i><span style="color: black; font-size: 10.5pt;"><br></span><i><span style="color: black; font-size: 10.5pt;"><a href="tel:%28888%29%20460-2867" target="_blank" value="+18884602867">(888) 460-2867</a></span></i><span style="color: black; font-size: 10.5pt;"><br></span><i><span style="color: black; font-size: 10.5pt;"><a href="http://www.aeonsolar.com/" target="_blank">www.aeonsolar.com</a></span></i></p></div></span>
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