<div>Thanks, Mr Brearley......i have looked into the Solar Bos disconncecting combiners and also the Blue Oak......both look very well designed and we look forward to using them when we have a project where it makes sense.....small and medium residential projects dont pencil out for us based on the price of these products....I encouraged both companies to come up with a smaller version which has a price more in line with the smaller sized systems......</div>
<div>Luckily the latest inverters from most manufacturers take care of this need with their included/integrated but seperated fused DC disconnects.....</div>
<div>However seems to me that in the nearer future we need to be moving towards having disconnects located as close as possible to the array......</div>
<div>My dream combiner for all you manufacturers out there would be similar to the readywatt 3 or 4 circuit, fused, rail mountable, combiner with disconnect integrated........</div>
<div>I am still pondering how square D could have overlooked this important listing requirement......makes me wonder!?!?!?</div>
<div><br clear="all"><br>-- <br>Sunny Regards,<br>Kirpal Khalsa<br>NABCEP Certified Solar PV Installer<br>Renewable Energy Systems<br><a href="http://www.oregonsolarworks.com">www.oregonsolarworks.com</a><br>541-218-0201 m<br>
541-592-3958 o<br><br></div>
<div class="gmail_quote">On Mon, Jan 11, 2010 at 11:41 AM, David Brearley <span dir="ltr"><<a href="mailto:david.brearley@solarprofessional.com">david.brearley@solarprofessional.com</a>></span> wrote:<br>
<blockquote style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex" class="gmail_quote">
<div><font face="Calibri, Verdana, Helvetica, Arial"><span style="FONT-SIZE: 11pt">(Unless, of course, you are working with a transformerless inverter and an ungrounded array, in which case both the positive and negative conductors would need to be switched, since both are ungrounded.)
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<div class="h5"><br><br><br>On 1/10/10 9:10 AM, "Drake Chamberlin" <<a href="http://drake.chamberlin@redwoodalliance.org/" target="_blank">drake.chamberlin@redwoodalliance.org</a>> wrote:<br><br></div></div>
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<blockquote><font face="Calibri, Verdana, Helvetica, Arial"><span style="FONT-SIZE: 11pt">At 05:14 PM 1/9/2010, you wrote:<br></span></font>
<blockquote><font face="Calibri, Verdana, Helvetica, Arial"><span style="FONT-SIZE: 11pt">I recently came across a revised technical bulletin from square D ( <a href="http://ecatalog.squared.com/pubs/Electrical%20Distribution/Safety%20Switches/Heavy%20Duty/3110DB0401.pdf" target="_blank">http://ecatalog.squared.com/pubs/Electrical%20Distribution/Safety%20Switches/Heavy%20Duty/3110DB0401.pdf</a> )......<br>
</span></font></blockquote><font face="Calibri, Verdana, Helvetica, Arial"><span style="FONT-SIZE: 11pt">We would need to use method "D" with the three pole. Method "C" would break the negative, leaving it ungrounded. <br>
<br><br><font color="#0000ff">Drake Chamberlin<br>Athens Electric<br>OH License 44810<br>CO License 3773<br>NABCEP </font></span><font color="#0000ff"><font size="2"><span style="FONT-SIZE: 10pt">TM </span></font><span style="FONT-SIZE: 11pt">Certified PV Installer <br>
Office - 740-448-7328<br></span></font></font></blockquote><font face="Calibri, Verdana, Helvetica, Arial"><font color="#0000ff"><span style="FONT-SIZE: 11pt">Mobile - 740-856-9648 </span></font></font></div></div></div><br>
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