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<DIV>The ability to string multiple powerwalls together to get up to 90 KWhrs of
storage makes them modular and likely quite easy to install. The price is
rather high but I haven’t priced batteries lately for comparison. The
built in safety features will make for a good selling point too.</DIV>
<DIV> </DIV>
<DIV>I’m giving him the benefit of the doubt for now.</DIV>
<DIV> </DIV>
<DIV>Tom</DIV>
<DIV> </DIV>
<DIV> </DIV>
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<DIV style="font-color: black"><B>From:</B> <A title=allan@sindelarsolar.com
href="mailto:allan@sindelarsolar.com">Allan Sindelar</A> </DIV>
<DIV><B>Sent:</B> Saturday, May 2, 2015 12:57 PM</DIV>
<DIV><B>To:</B> <A title=re-wrenches@lists.re-wrenches.org
href="mailto:re-wrenches@lists.re-wrenches.org">RE-wrenches</A> </DIV>
<DIV><B>Subject:</B> Re: [RE-wrenches] Tesla Powerwall battery paired with
solar</DIV></DIV></DIV>
<DIV> </DIV></DIV>
<DIV
style='FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: "Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; DISPLAY: inline'>Well,
I'll go out on a limb and speculate that this is a game changer. There will be a
lot of buzz, and it'll shift general public perceptions. There'll be a greater
mainstream awareness that "batteries" are improving. A number of my off grid
clients are quite ready for an alternative to FLA batteries. The Teslas may have
strictly limited applications now, but I'll predict that these are the start of
a seismic shift.<BR>Allan<BR><BR>
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<P class=MsoNormal><B>Allan Sindelar</B><BR><SPAN style="FONT-SIZE: 10pt"><A
href="mailto:allan@sindelarsolar.com">allan@sindelarsolar.com</A></SPAN><BR><SPAN
style="FONT-SIZE: 10pt">NABCEP Certified PV Installation Professional<BR>NABCEP
Certified Technical Sales Professional<BR>New Mexico EE98J Journeyman
Electrician<BR>Founder (Retired), <SPAN
style="mso-bidi-font-weight: bold">Positive Energy, Inc.</SPAN><BR><B>505
780-2738 cell</B><BR style="mso-special-character: line-break"><!--[if
!supportLineBreakNewLine]--><BR
style="mso-special-character: line-break"><!--[endif]--><B><o:p></o:p></B></SPAN></P>
<P class=MsoNormal><o:p></o:p> </P></DIV></DIV>
<DIV class=moz-cite-prefix>On 5/2/2015 7:03 AM, Dan Fink wrote:<BR></DIV>
<BLOCKQUOTE
cite=mid:CAF+3Lncm6RNY5hTL3eoSWErdqypzznFGHxRbgBbcVdXHhyP0tA@mail.gmail.com
type="cite">
<DIV dir=ltr>The Tesla media kit describes 2 models, a 7kwh and a 10kwh:
<DIV>
<P
style="BORDER-TOP: 0px; FONT-FAMILY: 'HeiS ASC Simplified
chinese','heis asc simplified
chinese_n5',HelveticaNeue-Regular,'helvetica neue
regular','helvetica
neue',Helvetica; BORDER-RIGHT: 0px; VERTICAL-ALIGN: baseline; BORDER-BOTTOM: 0px; COLOR: rgb(102,102,102); OUTLINE-WIDTH: 0px; PADDING-BOTTOM: 0px; PADDING-TOP: 0px; OUTLINE-STYLE: none; PADDING-LEFT: 0px; MARGIN-LEFT: 1px; BORDER-LEFT: 0px; MARGIN-TOP: 1px; OUTLINE-COLOR: invert; LINE-HEIGHT: 20px; PADDING-RIGHT: 0px; MARGIN-RIGHT: 1px">Tesla’s
selling price to installers is $3500 for 10kWh and $3000 for 7kWh. (Price
excludes inverter and installation.) Deliveries begin in late Summer.</P>
<P
style="BORDER-TOP: 0px; FONT-FAMILY: 'HeiS ASC Simplified
chinese','heis asc simplified
chinese_n5',HelveticaNeue-Regular,'helvetica neue
regular','helvetica
neue',Helvetica; BORDER-RIGHT: 0px; VERTICAL-ALIGN: baseline; BORDER-BOTTOM: 0px; COLOR: rgb(102,102,102); OUTLINE-WIDTH: 0px; PADDING-BOTTOM: 0px; PADDING-TOP: 0px; OUTLINE-STYLE: none; PADDING-LEFT: 0px; MARGIN-LEFT: 1px; BORDER-LEFT: 0px; MARGIN-TOP: 1px; OUTLINE-COLOR: invert; LINE-HEIGHT: 20px; PADDING-RIGHT: 0px; MARGIN-RIGHT: 1px">Powerwall
specs:</P>
<UL
style="FONT-SIZE: 15px; BORDER-TOP: 0px; FONT-FAMILY: 'HeiS ASC Simplified
chinese','heis asc simplified
chinese_n5',HelveticaNeue-Regular,'helvetica neue
regular','helvetica
neue',Helvetica; BORDER-RIGHT: 0px; VERTICAL-ALIGN: baseline; LIST-STYLE-POSITION: outside; BORDER-BOTTOM: 0px; COLOR: rgb(102,102,102); OUTLINE-WIDTH: 0px; PADDING-BOTTOM: 35px; PADDING-TOP: 0px; OUTLINE-STYLE: none; PADDING-LEFT: 20px; MARGIN: 0px; BORDER-LEFT: 0px; OUTLINE-COLOR: invert; PADDING-RIGHT: 0px">
<LI
style="BORDER-TOP: 0px; FONT-FAMILY: inherit; BORDER-RIGHT: 0px; VERTICAL-ALIGN: baseline; BORDER-BOTTOM: 0px; OUTLINE-WIDTH: 0px; PADDING-BOTTOM: 0px; PADDING-TOP: 0px; OUTLINE-STYLE: none; PADDING-LEFT: 0px; MARGIN: 0px; BORDER-LEFT: 0px; OUTLINE-COLOR: invert; PADDING-RIGHT: 0px">Mounting:
Wall Mounted Indoor/Outdoor
<LI
style="BORDER-TOP: 0px; FONT-FAMILY: inherit; BORDER-RIGHT: 0px; VERTICAL-ALIGN: baseline; BORDER-BOTTOM: 0px; OUTLINE-WIDTH: 0px; PADDING-BOTTOM: 0px; PADDING-TOP: 0px; OUTLINE-STYLE: none; PADDING-LEFT: 0px; MARGIN: 0px; BORDER-LEFT: 0px; OUTLINE-COLOR: invert; PADDING-RIGHT: 0px">Inverter:
Pairs with growing list of inverters
<LI
style="BORDER-TOP: 0px; FONT-FAMILY: inherit; BORDER-RIGHT: 0px; VERTICAL-ALIGN: baseline; BORDER-BOTTOM: 0px; OUTLINE-WIDTH: 0px; PADDING-BOTTOM: 0px; PADDING-TOP: 0px; OUTLINE-STYLE: none; PADDING-LEFT: 0px; MARGIN: 0px; BORDER-LEFT: 0px; OUTLINE-COLOR: invert; PADDING-RIGHT: 0px">Energy:
7 kWh or 10 kWh
<LI
style="BORDER-TOP: 0px; FONT-FAMILY: inherit; BORDER-RIGHT: 0px; VERTICAL-ALIGN: baseline; BORDER-BOTTOM: 0px; OUTLINE-WIDTH: 0px; PADDING-BOTTOM: 0px; PADDING-TOP: 0px; OUTLINE-STYLE: none; PADDING-LEFT: 0px; MARGIN: 0px; BORDER-LEFT: 0px; OUTLINE-COLOR: invert; PADDING-RIGHT: 0px">Continuous
Power: 2 kW
<LI
style="BORDER-TOP: 0px; FONT-FAMILY: inherit; BORDER-RIGHT: 0px; VERTICAL-ALIGN: baseline; BORDER-BOTTOM: 0px; OUTLINE-WIDTH: 0px; PADDING-BOTTOM: 0px; PADDING-TOP: 0px; OUTLINE-STYLE: none; PADDING-LEFT: 0px; MARGIN: 0px; BORDER-LEFT: 0px; OUTLINE-COLOR: invert; PADDING-RIGHT: 0px">Peak
Power: 3.3 kW
<LI
style="BORDER-TOP: 0px; FONT-FAMILY: inherit; BORDER-RIGHT: 0px; VERTICAL-ALIGN: baseline; BORDER-BOTTOM: 0px; OUTLINE-WIDTH: 0px; PADDING-BOTTOM: 0px; PADDING-TOP: 0px; OUTLINE-STYLE: none; PADDING-LEFT: 0px; MARGIN: 0px; BORDER-LEFT: 0px; OUTLINE-COLOR: invert; PADDING-RIGHT: 0px">Round
Trip Efficiency: >92%
<LI
style="BORDER-TOP: 0px; FONT-FAMILY: inherit; BORDER-RIGHT: 0px; VERTICAL-ALIGN: baseline; BORDER-BOTTOM: 0px; OUTLINE-WIDTH: 0px; PADDING-BOTTOM: 0px; PADDING-TOP: 0px; OUTLINE-STYLE: none; PADDING-LEFT: 0px; MARGIN: 0px; BORDER-LEFT: 0px; OUTLINE-COLOR: invert; PADDING-RIGHT: 0px">Operating
Temperature Range: -20C (-4F) to 43C (110F)
<LI
style="BORDER-TOP: 0px; FONT-FAMILY: inherit; BORDER-RIGHT: 0px; VERTICAL-ALIGN: baseline; BORDER-BOTTOM: 0px; OUTLINE-WIDTH: 0px; PADDING-BOTTOM: 0px; PADDING-TOP: 0px; OUTLINE-STYLE: none; PADDING-LEFT: 0px; MARGIN: 0px; BORDER-LEFT: 0px; OUTLINE-COLOR: invert; PADDING-RIGHT: 0px">Warranty:
10 years
<LI
style="BORDER-TOP: 0px; FONT-FAMILY: inherit; BORDER-RIGHT: 0px; VERTICAL-ALIGN: baseline; BORDER-BOTTOM: 0px; OUTLINE-WIDTH: 0px; PADDING-BOTTOM: 0px; PADDING-TOP: 0px; OUTLINE-STYLE: none; PADDING-LEFT: 0px; MARGIN: 0px; BORDER-LEFT: 0px; OUTLINE-COLOR: invert; PADDING-RIGHT: 0px">Dimensions:
H: 1300mm W: 860mm D:180mm </LI></UL>
<DIV><FONT color=#666666
face="HeiS ASC Simplified Chinese,
HeiS ASC Simplified Chinese_n5, HelveticaNeue-Regular,
Helvetica Neue Regular, Helvetica Neue, Helvetica"><SPAN
style="FONT-SIZE: 15px">Nice price point, no info on the BMS or usable
DOD.</SPAN></FONT></DIV></DIV>
<DIV> </DIV>
<DIV>Power only 2kW with peak of 3.3kW? Ouch, most off grid homes do better
than that. Also 7-10 kWh of energy storage would be fine for an small,
efficient off-grid home and conservative user, but my math shows only a few
hours of autonomy time for the typical American homeowner.</DIV></DIV>
<DIV class=gmail_extra>
<DIV> </DIV>
<DIV>
<DIV class=gmail_signature>
<DIV dir=ltr>Dan Fink
<DIV>Buckville Energy</DIV>
<DIV>IREC Certified Instructor™ for: </DIV>
<DIV>~ PV Installation Professional</DIV>
<DIV>~ Small Wind Installer</DIV>
<DIV>NABCEP / IREC / ISPQ Accredited Continuing Education
Providers™<BR>970.672.4342<BR><BR> </DIV></DIV></DIV></DIV>
<DIV> </DIV>
<DIV class=gmail_quote>On Sat, May 2, 2015 at 6:45 AM, Chris Schaefer <SPAN
dir=ltr><<A href="mailto:chris@solarandwindfx.com" target=_blank
moz-do-not-send="true">chris@solarandwindfx.com</A>></SPAN> wrote:<BR>
<BLOCKQUOTE class=gmail_quote
style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
<DIV lang=EN-US vlink="purple" link="blue">
<DIV>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: #1f497d'>Kurt,
since you’re a vermonter perhaps you’ve got an inside contact with Green
Mountain Power that can shed some light? Same issue here in NY, I’ve got
phone messages and emails asking about it. So we kinda need to know what the
battery voltage is in order to figure out how many amp hours the bank is.
Wonder how many life cycles, suggested DOD?</SPAN></P>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: #1f497d'></SPAN> </P>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: #1f497d'>Christopher</SPAN></P>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: #1f497d'>
Chris Schaefer’s</SPAN></P>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: #1f497d'>
<IMG alt=SolarWindFX
src="wlmailhtml:{273CD4C5-15EC-4A0D-B9FD-E76D3A4E370C}mid://00000113/!cid:part3.05030008.00020709@sindelarsolar.com"
width=283 height=58></SPAN></P>
<P class=MsoNormal><I><SPAN
style='FONT-SIZE: 9pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: #1f497d'>
Tel/Fax <A href="tel:585-229-2083" target=_blank moz-do-not-send="true"
value="+15852292083">585-229-2083</A> or Cell <A href="tel:585-748-1870"
target=_blank moz-do-not-send="true"
value="+15857481870">585-748-1870</A> </SPAN></I></P>
<P class=MsoNormal><I><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: #1f497d'>
5115 South Hill Road ~ Canandaigua New York 14424</SPAN></I></P>
<P class=MsoNormal><I><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: #1f497d'><A
href="http://www.solarandwindfx.com" target=_blank
moz-do-not-send="true">www.solarandwindfx.com</A> ~ E-mail: <A
href="mailto:chris@solarandwindfx.com" target=_blank
moz-do-not-send="true">chris@solarandwindfx.com</A></SPAN></I></P>
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width=60 height=81></TD>
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src="wlmailhtml:{273CD4C5-15EC-4A0D-B9FD-E76D3A4E370C}mid://00000113/!cid:part9.04090901.03030907@sindelarsolar.com"
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style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'> </SPAN>
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'></SPAN> </P>
<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'></SPAN> </P>
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style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'></SPAN> </P>
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style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'></SPAN> </P>
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<P class=MsoNormal style="TEXT-ALIGN: center" align=center><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: black'>Thomas
Jefferson, the author of our great Constitution, once said, "democracy" will
cease to exist when you take away from those who are willing to work and
give to those who would not."</SPAN><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: #1f497d'></SPAN></P>
<P class=MsoNormal><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Arial","sans-serif"; COLOR: #1f497d'></SPAN> </P>
<DIV>
<DIV
style="BORDER-TOP: #b5c4df 1pt solid; BORDER-RIGHT: medium none; BORDER-BOTTOM: medium none; PADDING-BOTTOM: 0in; PADDING-TOP: 3pt; PADDING-LEFT: 0in; BORDER-LEFT: medium none; PADDING-RIGHT: 0in">
<P class=MsoNormal><B><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Tahoma","sans-serif"'>From:</SPAN></B><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Tahoma","sans-serif"'> RE-wrenches
[mailto:<A href="mailto:re-wrenches-bounces@lists.re-wrenches.org"
target=_blank
moz-do-not-send="true">re-wrenches-bounces@lists.re-wrenches.org</A>] <B>On
Behalf Of </B>Kirk Herander<BR><B>Sent:</B> Saturday, 02 May, 2015
07:22<BR><B>To:</B> <A href="mailto:glenn.burt@glbcc.com" target=_blank
moz-do-not-send="true">glenn.burt@glbcc.com</A>; 'RE-wrenches'</SPAN></P>
<DIV>
<DIV class=h5><BR><B>Subject:</B> Re: [RE-wrenches] Tesla Powerwall battery
paired with solar</DIV></DIV></DIV></DIV>
<DIV>
<DIV class=h5>
<P class=MsoNormal> </P>
<P class=MsoNormal><SPAN style="FONT-SIZE: 14pt; COLOR: #1f497d">John
Berdner of Solaredge (still with them??) in a previous discussion on this
forum has stated that Solaredge can be AC-coupled, with a firmware tweak I
believe he said.</SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 14pt; COLOR: #1f497d"></SPAN> </P>
<DIV>
<P class=MsoNormal><B><SPAN style="FONT-SIZE: 14pt; COLOR: #1f497d">Kirk
Herander</SPAN></B></P>
<P class=MsoNormal><B><SPAN style="FONT-SIZE: 14pt; COLOR: #1f497d">VT
Solar, LLC </SPAN></B></P>
<P class=MsoNormal><B><I><SPAN
style="FONT-SIZE: 14pt; COLOR: #1f497d">Proven PV provider since
1991</SPAN></I></B></P>
<P class=MsoNormal><B><SPAN style="FONT-SIZE: 14pt; COLOR: #1f497d"><A
href="http://www.vermontsolarnow.com" target=_blank
moz-do-not-send="true">www.vermontsolarnow.com</A></SPAN></B></P>
<P class=MsoNormal><SPAN style="FONT-SIZE: 14pt; COLOR: #1f497d">dba Vermont
Solar Engineering</SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 14pt; COLOR: #1f497d">NABCEP<SUP>TM </SUP>Inaugural
Certificant</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-SIZE: 14pt; COLOR: #1f497d">VT RE
Incentive Program Partner</SPAN></P>
<P class=MsoNormal><SPAN style="FONT-SIZE: 14pt; COLOR: #1f497d"><A
href="tel:802.863.1202" target=_blank moz-do-not-send="true"
value="+18028631202">802.863.1202</A></SPAN></P></DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 14pt; COLOR: #1f497d"></SPAN> </P>
<DIV>
<DIV
style="BORDER-TOP: #b5c4df 1pt solid; BORDER-RIGHT: medium none; BORDER-BOTTOM: medium none; PADDING-BOTTOM: 0in; PADDING-TOP: 3pt; PADDING-LEFT: 0in; BORDER-LEFT: medium none; PADDING-RIGHT: 0in">
<P class=MsoNormal><B><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Tahoma","sans-serif"'>From:</SPAN></B><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Tahoma","sans-serif"'> RE-wrenches [<A
href="mailto:re-wrenches-bounces@lists.re-wrenches.org" target=_blank
moz-do-not-send="true">mailto:re-wrenches-bounces@lists.re-wrenches.org</A>]
<B>On Behalf Of </B>Glenn Burt<BR><B>Sent:</B> Friday, May 01, 2015 7:47
PM<BR><B>To:</B> 'RE-wrenches'<BR><B>Subject:</B> Re: [RE-wrenches] Tesla
Powerwall battery paired with solar</SPAN></P></DIV></DIV>
<P class=MsoNormal> </P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d">I can tell you that the
Solar Edge inverters do not support AC coupling, as their reps told me at
the NABCEP CE conference…</SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d">I have seen pictures of some
Solar City battery systems that use an XW as the inverter.</SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d"></SPAN> </P>
<DIV>
<DIV
style="BORDER-TOP: #b5c4df 1pt solid; BORDER-RIGHT: medium none; BORDER-BOTTOM: medium none; PADDING-BOTTOM: 0in; PADDING-TOP: 3pt; PADDING-LEFT: 0in; BORDER-LEFT: medium none; PADDING-RIGHT: 0in">
<P class=MsoNormal><B><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Tahoma","sans-serif"'>From:</SPAN></B><SPAN
style='FONT-SIZE: 10pt; FONT-FAMILY: "Tahoma","sans-serif"'> RE-wrenches <A
href="mailto:[mailto:re-wrenches-bounces@lists.re-wrenches.org]"
target=_blank
moz-do-not-send="true">[mailto:re-wrenches-bounces@lists.re-wrenches.org]</A>
<B>On Behalf Of </B>August Goers<BR><B>Sent:</B> Friday, May 01, 2015 6:50
PM<BR><B>To:</B> RE-wrenches<BR><B>Subject:</B> [RE-wrenches] Tesla
Powerwall battery paired with solar</SPAN></P></DIV></DIV>
<P class=MsoNormal> </P>
<P class=MsoNormal>Hi Wrenches,</P>
<P class=MsoNormal> </P>
<P class=MsoNormal>I’m sure you’ve seen the Tesla Powerwall press releases
by now:</P>
<P class=MsoNormal> </P>
<P class=MsoNormal><A href="http://www.teslamotors.com/presskit/teslaenergy"
target=_blank
moz-do-not-send="true">http://www.teslamotors.com/presskit/teslaenergy</A></P>
<P class=MsoNormal> </P>
<P class=MsoNormal>We are already getting calls from interested homeowners.
The product mostly seems like a toy for wealthy people but nonetheless I
would like to be educated in how it works. </P>
<P class=MsoNormal> </P>
<P class=MsoNormal>There is mention that the battery pairs with Solar Edge
inverters which makes sense because both the Powerwall and Solar Edge work
off of ~350 VDC. But, I can’t figure out how off grid operation would
work during power outages. Maybe another battery inverter like a Schneider
Conext is required?</P>
<P class=MsoNormal> </P>
<P class=MsoNormal>Any thoughts on this product for better or worse? </P>
<P class=MsoNormal> </P>
<P class=MsoNormal>Best,</P>
<P class=MsoNormal> </P>
<P class=MsoNormal>August</P>
<P
class=MsoNormal> </P></DIV></DIV></DIV></DIV><BR>_______________________________________________<BR>List
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