<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content="text/html; charset=us-ascii" http-equiv=Content-Type>
<META name=GENERATOR content="MSHTML 8.00.6001.18854"></HEAD>
<BODY>
<DIV dir=ltr align=left><SPAN class=031245521-20122009><FONT color=#0000ff
size=2 face=Arial>We have been looking at the Blue Oak line of fused
combiners/load break rated DC disconnects, but can't get the right fit /
cost.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=031245521-20122009><FONT color=#0000ff
size=2 face=Arial>Maybe a couple would do the trick at the array for
you?</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=031245521-20122009><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=031245521-20122009><FONT color=#0000ff
size=2 face=Arial>-Glenn Burt</FONT></SPAN></DIV><BR>
<DIV dir=ltr lang=en-us class=OutlookMessageHeader 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> Sunday, December 20, 2009 2:02 PM<BR><B>To:</B>
RE-wrenches<BR><B>Subject:</B> [RE-wrenches] DC disconnect
placement<BR></FONT><BR></DIV>
<DIV></DIV>Friends:<BR><BR>I am embarking on a 10 Kw ground mount grid-tie
installation. The client prepared for this installation some time ago by
stubbing a PVC conduit underground towards the future location of the PV
array. Prior to beginning this job, an excavation contractor intercepted
the empty conduit with a backhoe.<BR><BR>No harm was done because this conduit
was empty. Had this conduit been filled with PV feeders, it would have
been very necessary to be able to disconnect the PV arrays, both for safety and
to prevent a brush fire in our very dry climate.<BR><BR>The inverters will be
located in a pump house about 130 feet from the PV arrays. I would not
normally put disconnects at the array and they are not required. This
scenario, however, has caused me to reconsider. The design now calls for a
disconnect at each row of modules. I feel that it would not be prudent to
delete this important safety item.<BR><BR>I wish there were a better selection
of compact, low profile disconnects suitable for a roof-top
installation. I have put external handle disconnects on roof but they look
terrible. I may specify touch-safe fuse holders inside of a Sola Deck for
future comp roof jobs. I am not sure what we will do with tile
roofs.<BR><BR>It seems to me that every source of power should have a means of
disconnection as close to the source as possible. This is just common
sense.<BR><BR>William Miller<BR><BR><X-SIGSEP>
<P></X-SIGSEP><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/"
eudora="autourl">http://millersolar.com<BR></A>License No.
C-10-773985<BR></FONT></P><p><table width="100%" bgcolor="#eeeeee"><tr><td width="100%"><a href="http://msgtag.com/?source=ffooter"><img src="http://img.msgtag.com/aBFohurDqC/drtqi/yE/Dvbgw/ws/Apfjjojw.gif" border="0"></a> has notified the sender that this message has been received.</td></tr></table><p></BODY></HTML>