<div dir="ltr"><div dir="ltr"><div class="gmail_default" style="font-size:large">Why 48v, why not commercial DC, like 850? What are you looking at for kwh storage? A1000vdc buss, homemade or otherwise, would drop the buss rating down to about 300 A. Commercial grade  inverters, such as 3-phase Delta PCS inverters are spec'ed for these situations.</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Dec 19, 2025 at 1:13 PM david quattro 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>Hi everyone,</div><div>   I am still helping an uber wealthy owner determine if he really wants this much power. If he does, do any of you have experience sourcing a 48v battery-combiner on the order of 4500 to 5000 amps?</div><div>  I also want to get clear on how to best wire from batteries to combiner, and from combiner to inverters. I read here on the Wrenches list about some electricians who strategically sized conductor AWG so that resistance matches, which seems straightforward once we get our components mounted and accurate distances can be determined. Can anyone on list provide feedback about that, I really appreciate it!</div><div>Thank you</div></div>
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</blockquote></div><div><br clear="all"></div><div><br></div><span class="gmail_signature_prefix">-- </span><br><div dir="ltr" class="gmail_signature"><div dir="ltr"><p></p><p class="MsoNormal" style="color:rgb(0,0,0);font-family:Arial;font-size:16px;margin:0in 0in 0.0001pt"><a name="m_3144200884244654661_SignatureSanitizer__MailAutoSig" style="font-size:10pt"><b><img width="96" height="72" src="https://ci3.googleusercontent.com/mail-sig/AIorK4zIGox3hmaGW8StlnANQvRdXBrTEgpee6ZmV_8h-pfWcEl7lwlqfhSqd2PgPh89cgzwpzfUzuuIGxKE"><br></b></a></p><p class="MsoNormal" style="color:rgb(0,0,0);font-family:Arial;font-size:16px;margin:0in 0in 0.0001pt"><a name="m_3144200884244654661_SignatureSanitizer__MailAutoSig" style="font-size:10pt"><b>Kirk Herander / </b></a><b style="font-size:10pt"><a href="mailto:kirkh@vermont.solar" title="Send an email to kirkh@vermont.solar; Send an email to kirkh@vermont.solar" style="color:blue" target="_blank">kirkh@vermont.solar</a></b></p><p class="MsoNormal" style="color:rgb(0,0,0);font-family:Arial;font-size:16px;margin:0in 0in 0.0001pt"><span style="font-size:10pt"><b>Owner|Principal, VT Solar, LLC</b></span></p><p class="MsoNormal" style="color:rgb(0,0,0);font-family:Arial;font-size:16px;margin:0in 0in 0.0001pt"><span style="font-size:10pt"><b><i>Celebrating our 34^st Anniversary 1991-2025!!</i></b></span></p><p class="MsoNormal" style="color:rgb(0,0,0);font-family:Arial;font-size:16px;margin:0in 0in 0.0001pt"><span style="font-size:10pt">dba Vermont Solar Engineering</span><br></p><p class="MsoNormal" style="color:rgb(0,0,0);font-family:Arial;font-size:16px;margin:0in 0in 0.0001pt"><span style="font-size:10pt">802.559.1225</span></p></div></div>
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