\ufeff<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content="text/html; charset=utf-8" http-equiv=content-type>
<META name=GENERATOR content="MSHTML 8.00.6001.23532">
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff text=#000000>
<DIV><FONT size=2>Ray</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2> We understand that free standing ground mounts, pole
barns / ( free standing buildings with no one staying or living in them )
equipment sheds etc are exempt from Rapid shut down. </FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>peter</FONT></DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=ray@solarray.com href="mailto:ray@solarray.com">Ray</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=re-wrenches@lists.re-wrenches.org
href="mailto:re-wrenches@lists.re-wrenches.org">RE-wrenches</A> ; <A
title=rcantwell@coseia.org href="mailto:rcantwell@coseia.org">Rebecca
Cantwell</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, August 23, 2018 12:31
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [RE-wrenches] Rapid Shutdown
Again?</DIV>
<DIV><BR></DIV>
<P>Greetings fellow wrenches;</P>
<P>I know we have beat this many times but I once again have not been able to
resolve the contradictory information in 690 in regards to implementing
690.12. As Rebekah Hren pointed out before, the diagrams shown in Figure
690.1(b) show that the <I>PV System DC Circuit</I> stops at the <I>PV
Disconnect</I>. Note 2 says specifically the '<I>PV Disconnect separates
the PV system from all other systems</I>'. But then in the definitions
in 690.2 on the next page, the new definition of a <I>P</I><I>V System DC
Circuit</I> says that it includes DC to DC converter output circuits.
(which are Solar Edge module level controls, but could be interpreted as a
MPPT battery charge Controller?) <BR></P>
<P>Then 690.12 which only applies to '<I>PV System circuits in or on
buildings</I>', says we have to control conductors more than 3 ft after
penetrating the building. <BR></P>
<P>So in my case, I'm looking at a ground mount, and installing an external
lockable disconnect on the wall before it goes into the building. This
will officially be the PV Disconnect. In my interpretation, I should not
need to do any Rapid Shutdown, because I've essentially prevented the <I>PV
system</I> from ever entering the building at all ( based on the 5th diagram
and Note 2) However, I could see an AHJ claiming I had to do RS all the
way to the output side of the charge controller.</P>
<P>If this were true, could I simply apply RS equipment from the PV disconnect
to the output of the charge controller, or am I back to module level shutdown
for my ground mounted array, or could I build a tiny building that just housed
the PV Disconnect and take the exemption for '<I>buildings with the sole
purpose of housing PV system equipment</I>'? <BR></P>
<P>Essentially the definitions in 690.2 are too broad, and are at odds with
the Figure and Notes of 690.1. They really didn't fix this in the 2017
code for us lowly off gridders. Charge controllers are covered by article
706.23<U> </U><U><I>Charge Control</I></U>,<B> </B>and NOT by 690.12 at all.
IMHO, the charge controller needs to be clearly defined and differentiated
from DC to DC converters like Solar Edge's module level DC equipment.
<BR></P>
<P>I just want to go back to doing solar designs and installations, and quit
acting like an attorney parsing every word of this confusing code
language.<BR></P><PRE class=moz-signature cols="72">--
Ray Walters
Remote Solar
303 505-8760</PRE>
<P>
<HR>
<P></P>_______________________________________________<BR>List sponsored by
Redwood Alliance<BR><BR>List Address:
RE-wrenches@lists.re-wrenches.org<BR><BR>Change listserver email address &
settings:<BR>http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org<BR><BR>List-Archive:
http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html<BR><BR>List
rules & etiquette:<BR>www.re-wrenches.org/etiquette.htm<BR><BR>Check out
or update participant
bios:<BR>www.members.re-wrenches.org<BR><BR></BLOCKQUOTE></BODY></HTML>