<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content="text/html; charset=iso-8859-1" http-equiv=Content-Type>
<META name=GENERATOR content="MSHTML 8.00.6001.18939">
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff>
<DIV><FONT size=2 face=Arial>Yes, we have been taking the approach Rebekah
describes and treat the grounding conductor from the Enphase as GEC:
Continuous #6 copper from the Enphase installed grounding clamp all the way back
to the Grounding Electrode. The irreversable splices can be a bother compared to
using a Polaris or similar but AHJs have been very happy with this approach (so
far).</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Charlie Pickard</FONT></DIV>
<DIV><FONT size=2 face=Arial>Aladdin Solar</FONT></DIV>
<DIV><FONT size=2 face=Arial>Excelsior, MN 55331</FONT></DIV>
<DIV><FONT size=2 face=Arial><A
href="mailto:cpickard@AladdinSolar.com">cpickard@AladdinSolar.com</A></FONT></DIV>
<DIV><FONT size=2 face=Arial><A
href="http://www.AladdinSolar.com">www.AladdinSolar.com</A></FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=bekahhren@yahoo.com href="mailto:bekahhren@yahoo.com">Rebekah
Hren</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=re-wrenches@lists.re-wrenches.org
href="mailto:re-wrenches@lists.re-wrenches.org">RE-wrenches</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, September 14, 2010 9:25
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [RE-wrenches] GEC for
Enphase inverters</DIV>
<DIV><BR></DIV>
<TABLE border=0 cellSpacing=0 cellPadding=0>
<TBODY>
<TR>
<TD vAlign=top>The code does require the GEC to be continuous (250.64C),
and I believe that the AC EGC for the Enphase metal inverter cases is in
fact the same as the DC GEC since the point of system bonding on the DC
side is inside the inverter.
<DIV>See art. 100 definitions:<B>Grounding Electrode Conductor. A
conductor used to</B></DIV>
<P class=p1><B>connect the system grounded conductor...</B><B>to a point
on the grounding electrode</B></P>
<P class=p1><B>system.</B></P>
<DIV><BR>So this means that for Enphase systems the AC EGC (which is
also the DC GEC) should be at minimum 8 awg (250.66) and continuous?
Seems like it to me. </DIV>
<DIV><BR>
<DIV>Rebekah Hren</DIV>
<DIV><BR>
<DIV><BR><BR>--- On <B>Tue, 9/14/10, Mark Frye
<I><markf@berkeleysolar.com></I></B> wrote:<BR>
<BLOCKQUOTE
style="BORDER-LEFT: rgb(16,16,255) 2px solid; PADDING-LEFT: 5px; MARGIN-LEFT: 5px"><BR>From:
Mark Frye <markf@berkeleysolar.com><BR>Subject: Re:
[RE-wrenches] GEC for Enphase inverters<BR>To: "'RE-wrenches'"
<re-wrenches@lists.re-wrenches.org><BR>Date: Tuesday, September
14, 2010, 10:05 AM<BR><BR>
<DIV id=yiv1974489623>
<DIV dir=ltr align=left><SPAN
class=yiv1974489623468365813-14092010><FONT color=#0000ff size=2
face=Arial>I believe the AC GEC runs from; the point where the
ungrounded current carrying conductor is bonded to the enclosure of
the service enterance equipment; to the connection to the ground
electrode system. Conductors that run from the service enterance
equipment, thru the premis to the Enphase are bonding jumpers that are
not required to be continuous.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN
class=yiv1974489623468365813-14092010><FONT color=#0000ff size=2
face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN lang=en-us><FONT size=2 face=Arial>Mark
Frye</FONT></SPAN> <BR><SPAN lang=en-us><FONT size=2
face=Arial>Berkeley Solar Electric Systems</FONT></SPAN> <BR><SPAN
lang=en-us><FONT size=2 face=Arial>303 Redbud Way</FONT></SPAN>
<BR><SPAN lang=en-us><FONT size=2 face=Arial>Nevada City, CA
95959</FONT></SPAN> <BR><SPAN lang=en-us><FONT size=2 face=Arial>(530)
401-8024</FONT></SPAN> <BR><SPAN lang=en-us></SPAN><A
href="http://www.berkeleysolar.com/" rel=nofollow target=_blank><SPAN
lang=en-us><U><FONT color=#0000ff size=2
face=Arial>www.berkeleysolar.com</FONT></U></SPAN></A><SPAN
lang=en-us><FONT size=2 face=Arial> </FONT></SPAN> </DIV>
<DIV> </DIV><BR>
<DIV dir=ltr lang=en-us class=yiv1974489623OutlookMessageHeader
align=left>
<HR tabIndex=-1>
<FONT size=2 face=Tahoma><B>From:</B>
re-wrenches-bounces@lists.re-wrenches.org
[mailto:re-wrenches-bounces@lists.re-wrenches.org] <B>On Behalf Of
</B>William Miller<BR><B>Sent:</B> Monday, September 13, 2010 9:46
PM<BR><B>To:</B> RE-wrenches<BR><B>Subject:</B> [RE-wrenches] GEC for
Enphase inverters<BR></FONT><BR></DIV>
<DIV></DIV>Friends:<BR><BR>According to the 2005 NEC 250.64(C), the
GEC for an AC system needs to be continuous without splices unless
they are irreversible. I am not clear where this conductor
starts and ends. Is it from the ground buss in a sub-panel to
the disconnect switch on the roof, or to each inverter?<BR><BR>Also,
non-reversible splices need to be listed for use in grounding
systems. Any suggestions on make and model of splices so
listed?<BR><BR>Any advise from those more experienced is much
appreciated.<BR><BR>William Miller<BR><BR>
<P><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/" rel=nofollow
target=_blank>http://millersolar.com<BR></A>License No.
C-10-773985<BR></FONT></P></DIV><BR>-----Inline Attachment
Follows-----<BR><BR>
<DIV
class=plainMail>_______________________________________________<BR>List
sponsored by Home Power magazine<BR><BR>List Address: <A
href="/mc/compose?to=RE-wrenches@lists.re-wrenches.org"
ymailto="mailto:RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.org</A><BR><BR>Options
& 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>List-Archive:
<A
href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org"
target=_blank>http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</A><BR><BR>List
rules &
etiquette:<BR>www.re-wrenches.org/etiquette.htm<BR><BR>Check out
participant
bios:<BR>www.members.re-wrenches.org<BR><BR></DIV></BLOCKQUOTE></DIV></DIV></DIV></TD></TR></TBODY></TABLE><BR>
<P>
<HR>
<P></P>_______________________________________________<BR>List sponsored by
Home Power magazine<BR><BR>List Address:
RE-wrenches@lists.re-wrenches.org<BR><BR>Options &
settings:<BR>http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org<BR><BR>List-Archive:
http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org<BR><BR>List
rules & etiquette:<BR>www.re-wrenches.org/etiquette.htm<BR><BR>Check out
participant bios:<BR>www.members.re-wrenches.org<BR><BR><BR><BR><BR>__________
Information from ESET NOD32 Antivirus, version of virus signature database
5450 (20100914) __________<BR><BR>The message was checked by ESET NOD32
Antivirus.<BR><BR>http://www.eset.com<BR><BR></BLOCKQUOTE></BODY></HTML>