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Carl,<br>
The AHJ is mistaken. It's the same logic that is used to defend the
point that the inverter breaker doesn't need a backfeed clip. The
inverter is considered a load, not a source, because it cannot produce
voltage or current when the grid is off per UL 1741, just as a
traditional load can't. <br>
<br>
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<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>
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<br>
<br>
Darryl Thayer wrote:
<blockquote cite="mid:625104.7646.qm@web51904.mail.re2.yahoo.com"
type="cite">
<pre wrap="">You are absolutly correct, and the code does say the fuses shall be dead when the switch is off. I have not had that AHJ problem yet, but I expect it.
Darryl
--- On Wed, 1/13/10, Carl Adams <a class="moz-txt-link-rfc2396E" href="mailto:swingjunkie@gmail.com"><swingjunkie@gmail.com></a> wrote:
</pre>
<blockquote type="cite">
<pre wrap="">From: Carl Adams <a class="moz-txt-link-rfc2396E" href="mailto:swingjunkie@gmail.com"><swingjunkie@gmail.com></a>
Subject: [RE-wrenches] Load or Line Side was Solar accumulation panel
To: "RE-wrenches" <a class="moz-txt-link-rfc2396E" href="mailto:re-wrenches@lists.re-wrenches.org"><re-wrenches@lists.re-wrenches.org></a>
Date: Wednesday, January 13, 2010, 7:17 PM
Wrenches,
I just had an AHJ require me to switch the load and line
connections
on the fused AC disconnect which sits between the inverters
(AC
Combiner panel) and the point of utility
connection. The inverter
was connected on the LOAD side of the fused disconnect, and
while the
AHJ agreed this was the safest configuration, (when the
disco is OFF
the fuses are safe to remove) he insisted that the PV array
should be
connected to the LINE side of the disconnect since it is
supplying
power rather than acting as a LOAD. Any similar
experience or
arguments I can make based on the NEC which might help
change the
position of the AHJ next time round? I still believe
our initial
installation represents the safest configuration.
Carl Adams
SunRock Solar, LLC
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