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<p class=MsoNormal><font size=4 color=black face=Calibri><span
style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:black'>The UL
listing is only good for 12 or 24 volts, the manufacturer listing carries no
weight if the defecation hits the rotary oscillator.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=4 color=black face=Calibri><span
style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:black'>UL is
the one that counts.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=4 color=black face=Calibri><span
style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:black'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=4 color=black face=Calibri><span
style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:black'>If you’re
using an MPPT controller unless the panels are wired as single panels you can’t
use the QO breakers. I have always run them in pairs, in this area we can’t
run them in a series of 3, too cold.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=4 color=black face=Calibri><span
style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:black'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=4 color=black face=Calibri><span
style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:black'>As
Robin told me once when I thought that I could, “Move to Hawaii and do it
there” <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=4 color=black face=Calibri><span
style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:black'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=4 color=black face=Calibri><span
style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:black'>Outback
and Midnites’s gear has changed the industry. Many thanks to them.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=4 color=black face=Calibri><span
style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:black'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=4 color=black face=Calibri><span
style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:black'>Later,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=4 color=black face=Calibri><span
style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:black'>Bob <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=4 color=black face=Calibri><span
style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:black'><o:p> </o:p></span></font></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:"Tahoma","sans-serif";font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
re-wrenches-bounces@lists.re-wrenches.org
[mailto:re-wrenches-bounces@lists.re-wrenches.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>R Ray Walters<br>
<b><span style='font-weight:bold'>Sent:</span></b> Sunday, May 16, 2010 6:31 PM<br>
<b><span style='font-weight:bold'>To:</span></b> RE-wrenches<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [RE-wrenches] AC
breakers used in DC applications<o:p></o:p></span></font></p>
</div>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>My understanding was that the din mountable QOU breakers were rated to
125 vDC, and are internally the same as the QO. The difference was the
connectors, and the mounting method.<o:p></o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>I've used the QOUs reliably at 120 v nom on an EV, (but don't try this
at home, kids)<o:p></o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>We still use the QOs sometimes based on cost and availability, but I
don't use them on anything over 24 v nominal anymore. <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>They were handiest in that one breaker line could cover AC and low volt
DC.<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>With MPPT high voltage arrays, and some of Midnite Solar's new products
(Mini DC & Baby DC boxes), though, we've found less and less of a place for
the venerable QO line.<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<div>
<div>
<p class=MsoNormal><font size=1 color=black face=Helvetica><span
style='font-size:6.5pt;font-family:"Helvetica","sans-serif";color:black'>R.
Walters<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=1 color=black face=Helvetica><span
style='font-size:6.5pt;font-family:"Helvetica","sans-serif";color:black'><a
href="mailto:ray@solarray.com">ray@solarray.com</a><o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=1 color=black face=Helvetica><span
style='font-size:6.5pt;font-family:"Helvetica","sans-serif";color:black'>Solar
Engineer<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=1 color=black face=Helvetica><span
style='font-size:6.5pt;font-family:"Helvetica","sans-serif";color:black'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=1 color=black face=Helvetica><span
style='font-size:6.5pt;font-family:"Helvetica","sans-serif";color:black'><o:p> </o:p></span></font></p>
</div>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><o:p> </o:p></span></font></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>On May 16, 2010, at 2:25 PM, Kurt Albershardt wrote:<o:p></o:p></span></font></p>
</div>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Square-D tells me they have tested the breakers to a higher voltage
(can't recall now whether it was 80V or 125 VDC) but the listing is indeed for
48 Volts. 24V battery systems are useful for a lot of applications, but
the unfortunate lack of a 5A breaker means we can not use them to derive a
Class 2 supply, which would make them about 10x as useful to me.<o:p></o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>On May 15, 2010, at 9:22 , jay peltz wrote:<o:p></o:p></span></font></p>
</div>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Hi Rebekah,<o:p></o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>The 48v is a max rating not a nominal rating.<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>So yes only good for 12 and 24v systems.<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>However with CBI breakers I don't understand why the need for QO for DC
anymore?<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>jay<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>peltz power<o:p></o:p></span></font></p>
<div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>On May 15, 2010, at 6:28 AM, Rebekah Hren wrote:<o:p></o:p></span></font></p>
</div>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0
style='z-index:auto'>
<tr>
<td valign=top style='padding:0in 0in 0in 0in'>
<p class=MsoNormal><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>Hi,<o:p></o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>One thing to be clear about is whether these are
listed for "48 volt systems," or for max 48 volts?<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>I was under the impression that they were max 48
volts, meaning you really shouldn't use them on a system >24volts nominal.<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>Rebekah Hren<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>North Carolina<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<div>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><br>
<br>
<a href="http://thecarbonfreehome.com/">http://thecarbonfreehome.com/</a><br>
<br>
--- On <b><span style='font-weight:bold'>Sat, 5/15/10, Kurt Albershardt <i><span
style='font-style:italic'><<a href="mailto:info@es-ee.com">info@es-ee.com</a>></span></i></span></b>
wrote:<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><br>
From: Kurt Albershardt <<a href="mailto:info@es-ee.com">info@es-ee.com</a>><br>
Subject: Re: [RE-wrenches] AC breakers used in DC applications<br>
To: "RE-wrenches" <<a
href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a>><br>
Date: Saturday, May 15, 2010, 12:59 AM<o:p></o:p></span></font></p>
<div id=yiv787743009>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>The Square-D catalogs are marginally clear on which
breakers are listed for DC and for what voltages, but when I tried to select
an appropriate load center for a DC application earlier this year I quickly
ran into a number of conflicts in their catalogs. Here is the response
from Schneider tech support (Case# 4845778 on 1/19/10 in case anyone
runs into problems with an inspector):<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>The load center catalog numbers listed below are UL
LISTED, File E6294, for use on 48 V dc systems. The load centers listed ARE
NOT MARKED for use on this voltage system, however are suitable for the
application. QO branch breakers, 10-70 ampere (1 and 2 pole) are also UL
LISTED for use on 48V dc systems. Short circuit current rating is limited to
5,000 amperes when used on 48V dc.<br>
QO24L70F, S or RB QO612L100F, S, DF, DS, DFCU, DSCU, RB, TRB or RBCU
QO816L100F, S, DF, DS, DFCU, DSCU, RB or RBCU<br>
QO112L125G or QO11224L125G QO116L125G QO11624L125G QO120L125G QO12024L125G
QO124L125G or QO12030L150G QO124L150G QO130L150G or QO112L200G or QO130L200G
or QO13040L200G QO142L225G or<br>
GRB or GRB<br>
or GRB<br>
GRB<o:p></o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>GRB GRB GRB or GRB QO142L225GRB<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>I can email the PDF to anyone who needs a copy.<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
</div>
</div>
</div>
</div>
</td>
</tr>
</table>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
</div>
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