<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;"><DIV>Hi William, The PV side has to be ungrounded. the inverter provides GFDI. The AC side is as normal. If one is installed both of the DC side conductors have to be disconnected at the same time. If one of the DC conductors becomes grounded it will blow the AC side OCPD. There is a large AC signal on the DC side. </DIV>
<DIV>Darryl <BR><BR>--- On <B>Tue, 9/28/10, William Miller <I><william@millersolar.com></I></B> wrote:<BR></DIV>
<BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: rgb(16,16,255) 2px solid"><BR>From: William Miller <william@millersolar.com><BR>Subject: [RE-wrenches] Tranformless inverter<BR>To: "RE-wrenches" <re-wrenches@lists.re-wrenches.org><BR>Date: Tuesday, September 28, 2010, 11:52 PM<BR><BR>
<DIV id=yiv1921705825>Wrenches:<BR><BR>I received an advertisement from a distributor that SMA is now shipping 8, 9 and 10 KW transformerless inverters. Don't these require double insulated PV wiring and no connection to ground on the AC side? It's been too long since this subject last crossed my desk and I want to refresh my memory on the specifics.<BR><BR>William Miller<BR><BR><BR>
<DIV><FONT size=3><U>Please note new e-mail address and domain:<BR><BR></U>William Miller <BR>Miller Solar<BR>Voice :805-438-5600<BR>email: william@millersolar.com<BR><A href="http://millersolar.com/" target=_blank rel=nofollow>http://millersolar.com<BR></A>License No. C-10-773985<BR></FONT></DIV></DIV><BR>-----Inline Attachment Follows-----<BR><BR>
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