<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta content="text/html;charset=ISO-8859-1" http-equiv="Content-Type">
</head>
<body bgcolor="#ffffff" text="#000000">
Eric,<br>
The inverter output should connect to the grid, either at the meter or
main panel, as if the generator isn't there. The critical (backed up)
loads should be moved to a separate panel. Install feeders between the
two panels, with a transfer (either/or) switch somewhere in the line.
The transfer switch may be either manual or automatic. The grid feeds
the main input of the transfer switch, the generator feeds the
secondary output, and the critical loads panel is the common output.<br>
<br>
Be careful here - as Nick writes, things could get messed up quickly if
you don't get it right. And don't rely on signage or the customer
knowing what to do. Make it impossible to connect the two to each other.<br>
<br>
<div class="moz-signature">
<meta http-equiv="Content-Type" content="text/html; ">
<meta name="ProgId" content="Word.Document">
<meta name="Generator" content="Microsoft Word 11">
<meta name="Originator" content="Microsoft Word 11">
<link rel="File-List" href="signature_files/filelist.xml">
<!--[if gte mso 9]><xml>
<o:DocumentProperties>
<o:Author>pe</o:Author>
<o:LastAuthor>pe</o:LastAuthor>
<o:Revision>2</o:Revision>
<o:TotalTime>1</o:TotalTime>
<o:Created>2009-12-09T22:29:00Z</o:Created>
<o:LastSaved>2009-12-09T22:30:00Z</o:LastSaved>
<o:Pages>1</o:Pages>
<o:Words>52</o:Words>
<o:Characters>298</o:Characters>
<o:Company>pe</o:Company>
<o:Lines>2</o:Lines>
<o:Paragraphs>1</o:Paragraphs>
<o:CharactersWithSpaces>349</o:CharactersWithSpaces>
<o:Version>11.9999</o:Version>
</o:DocumentProperties>
</xml><![endif]--><!--[if gte mso 9]><xml>
<w:WordDocument>
<w:SpellingState>Clean</w:SpellingState>
<w:GrammarState>Clean</w:GrammarState>
<w:ValidateAgainstSchemas/>
<w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid>
<w:IgnoreMixedContent>false</w:IgnoreMixedContent>
<w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText>
<w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel>
</w:WordDocument>
</xml><![endif]--><!
--[if gte mso 9]><xml>
<w:LatentStyles DefLockedState="false" LatentStyleCount="156">
</w:LatentStyles>
</xml><![endif]-->
<style>
<!--
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{mso-style-parent:"";
margin:0in;
margin-bottom:.0001pt;
mso-pagination:widow-orphan;
font-size:12.0pt;
font-family:"Times New Roman";
mso-fareast-font-family:"Times New Roman";
color:black;}
a:link, span.MsoHyperlink
{color:blue;}
a:visited, span.MsoHyperlinkFollowed
{color:blue;}
span.il
{mso-style-name:il;}
@page Section1
{size:8.5in 11.0in;
margin:1.0in 1.25in 1.0in 1.25in;
mso-header-margin:.5in;
mso-footer-margin:.5in;
mso-paper-source:0;}
div.Section1
{page:Section1;}
-->
</style><!--[if gte mso 10]>
<style>
/* Style Definitions */
table.MsoNormalTable
{mso-style-name:"Table Normal";
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-parent:"";
mso-padding-alt:0in 5.4pt 0in 5.4pt;
mso-para-margin:0in;
mso-para-margin-bottom:.0001pt;
mso-pagination:widow-orphan;
font-size:10.0pt;
font-family:"Times New Roman";
mso-ansi-language:#0400;
mso-fareast-language:#0400;
mso-bidi-language:#0400;}
</style>
<![endif]--><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="2050"/>
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1"/>
</o:shapelayout></xml><![endif]-->
<div class="Section1">
<p class="MsoNormal" style=""><span class="il"><b style="">Allan</b></span><b
style=""> Sindelar</b><span style="font-size: 10pt;"><br>
<a href="mailto:Allan@positiveenergysolar.com" target="_blank"><span
class="il">Allan</span>@positiveenergysolar.com</a><br>
NABCEP Certified Photovoltaic Installer<br>
EE98J Journeyman Electrician<br>
<b style="">Positive Energy, Inc.</b><br>
3201 Calle Marie<br>
Santa Fe, New Mexico 87507<br>
<b style="">505 424-1112</b><br>
<a href="http://www.positiveenergysolar.com/" target="_blank">www.positiveenergysolar.com</a></span></p>
</div>
</div>
<br>
<br>
Nick Soleil wrote:
<blockquote cite="mid:716381.23388.qm@web44906.mail.sp1.yahoo.com"
type="cite">
<style type="text/css"><!-- DIV {margin:0px;} --></style>
<div style="font-family: arial,helvetica,sans-serif; font-size: 12pt;">Hi
Eric:<br>
Did you notice my e-mail on this subject last week? I was hoping
that someone would have some new, more concrete information on this
subject, but I guess the old story still applies. Here is the basic
run down.<br>
The inverters will likely see the generator as utility power,
especially if it is a decent quality generator, with a clean wave
form. The inverters will connect to the generator and back-feed the
power into the generator's alternator, causing heat and generator
failure. The solar will burn up the alternator. I have heard that
this has occurred before.<br>
The only way to prevent this is to connect the solar directly to
the utility power (not through the generator's backed-up emergency load
center.) <br>
If you must connect the solar through the generator's emergency
load center, then the generator must not be placed into "Auto," but
must instead be in "manual." The customer must be clear that the solar
breakers must be turned off before the generator is turned on. This
probably should include signage which makes this clear to the customer.<br>
<div> </div>
Nick Soleil<br>
Project Manager<br>
Advanced Alternative Energy Solutions, LLC<br>
PO Box 657<br>
Petaluma, CA 94953<br>
Cell: 707-321-2937<br>
Office: 707-789-9537<br>
Fax: 707-769-9037
<div><br>
</div>
<div style="font-family: arial,helvetica,sans-serif; font-size: 12pt;"><br>
<div style="font-family: arial,helvetica,sans-serif; font-size: 10pt;"><font
face="Tahoma" size="2">
<hr size="1"><b><span style="font-weight: bold;">From:</span></b>
<a class="moz-txt-link-rfc2396E" href="mailto:solarepiphany@gmail.com">"solarepiphany@gmail.com"</a> <a class="moz-txt-link-rfc2396E" href="mailto:solarepiphany@gmail.com"><solarepiphany@gmail.com></a><br>
<b><span style="font-weight: bold;">To:</span></b>
<a class="moz-txt-link-abbreviated" href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a><br>
<b><span style="font-weight: bold;">Sent:</span></b> Mon, March 1,
2010 3:03:06 PM<br>
<b><span style="font-weight: bold;">Subject:</span></b> [RE-wrenches]
Generators and Grid-tie Systems<br>
</font><br>
Hello,<br>
<br>
We have our first grid-tied install involving a propane generator
coming up soon. No batteries. Customer will be getting a panel upgrade
with the system. <br>
<br>
Specifically:<br>
1.When sizing the replacement panel, do I have to account for the main,
gen, and pv?<br>
<br>
2.Will the pv sense the generator output as grid voltage and
sync/output? <br>
<br>
3.If so: during a power outage and while gen is operating, what if pv
production is higher than the house loads?<br>
<br>
Thanks for the input!<br>
<br>
Eric<br>
Sent from my Verizon Wireless BlackBerry<br>
_______________________________________________<br>
List sponsored by Home Power magazine<br>
<br>
List Address: <a moz-do-not-send="true"
ymailto="mailto:RE-wrenches@lists.re-wrenches.org"
href="mailto:RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.org</a><br>
<br>
Options & settings:<br>
<span><a moz-do-not-send="true" target="_blank"
href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a></span><br>
<br>
<span>List-Archive: <a moz-do-not-send="true" target="_blank"
href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org">http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</a></span><br>
<br>
List rules & etiquette:<br>
<a moz-do-not-send="true" target="_blank"
href="http://www.re-wrenches.org/etiquette.htm">www.re-wrenches.org/etiquette.htm</a><br>
<br>
Check out participant bios:<br>
<a moz-do-not-send="true" target="_blank"
href="http://www.members.re-wrenches.org">www.members.re-wrenches.org</a><br>
<br>
</div>
</div>
</div>
<br>
<pre wrap="">
<hr size="4" width="90%">
_______________________________________________
List sponsored by Home Power magazine
List Address: <a class="moz-txt-link-abbreviated" href="mailto:RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.org</a>
Options & settings:
<a class="moz-txt-link-freetext" href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a>
List-Archive: <a class="moz-txt-link-freetext" href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org">http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</a>
List rules & etiquette:
<a class="moz-txt-link-abbreviated" href="http://www.re-wrenches.org/etiquette.htm">www.re-wrenches.org/etiquette.htm</a>
Check out participant bios:
<a class="moz-txt-link-abbreviated" href="http://www.members.re-wrenches.org">www.members.re-wrenches.org</a>
</pre>
</blockquote>
</body>
</html>