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<p>Yes, I would like more info too. I'm all about safety, but it
needs to be based on reality not theory. For instance, would
string level shut down have stopped the arcs you mentioned? Also,
I second the screening. Even if MLSD stops the fire, the rodents
have still won the day by taking out part of the array. How about
an exemption from MLSD for systems below a certain voltage, and
having animal guard in place, and those would still have string
level shut down.<br>
</p>
<pre class="moz-signature" cols="72">Ray Walters
Remote Solar
303 505-8760</pre>
<div class="moz-cite-prefix">On 1/29/21 3:58 PM, frenergy wrote:<br>
</div>
<blockquote type="cite"
cite="mid:941d772c-b613-a11e-0722-ddd251e95271@psln.com">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<p>Andrew,</p>
<p> If these are the only two examples of justification
of MLSD and not knowing the details of the examples you've
cited, I suggest there is a more effective, equal in labor to
apply, less expensive, durable solution. For the squirrel
problem, an alternate solution is one of the available edge of
array screen products. Not only does it stop the squirrels but
it works for mice, leaves, pine needles, etc. <br>
</p>
<p> Can you enlighten us about the cause of the resi
fires that were caused from the lack of MLSD's? Poor wire
management? And was the hole in the metal roof caused by the
squirrel having lunch on the wiring?</p>
<p> I feel it worth diving into this deeper for a
variety of reasons.</p>
<p>Bill</p>
<pre class="moz-signature" cols="72">Feather River Solar Electric
Bill Battagin, Owner
4291 Nelson St.
Taylorsville, CA 95983
530.284.7849
CA Lic 874049
<a class="moz-txt-link-abbreviated" href="http://www.frenergy.net" moz-do-not-send="true">www.frenergy.net</a></pre>
<div class="moz-cite-prefix">On 1/29/2021 11:56 AM, Solar Energy
Solutions wrote:<br>
</div>
<blockquote type="cite"
cite="mid:536449831.235766.1611950168229@mail.yahoo.com">
<meta http-equiv="content-type" content="text/html;
charset=UTF-8">
<div class="ydpf908f8c8yahoo-style-wrap" style="font-family:
times new roman, new york, times, serif; font-size: 16px;">
<div>
<div dir="ltr" data-setdir="false">Dear All,</div>
<div dir="ltr" data-setdir="false"><br>
</div>
<div dir="ltr" data-setdir="false">I have been an outspoken
critic of module level shutdown for all the reasons folks
do. However, I have come around. We have witnessed too
many systems where rooftop wiring has been chewed up by
critters... mostly squirrels. We have seen everything
from residential fires to holes in metal roofs caused by a
DC arc. I never thought I would see the day when I would
not only be thinking MLSD is a good idea but advocating
for it.<br>
</div>
<div><br>
</div>
<div dir="ltr" data-setdir="false">Smiles,<br>
</div>
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<div id="yahoo_quoted_2375188993" class="yahoo_quoted">
<div style="font-family:'Helvetica Neue', Helvetica, Arial,
sans-serif;font-size:13px;color:#26282a;">
<div> On Friday, January 29, 2021, 11:25:28 AM PST, <a
class="moz-txt-link-abbreviated"
href="mailto:sky@ecologicalsystems.biz"
moz-do-not-send="true">sky@ecologicalsystems.biz</a> <a
class="moz-txt-link-rfc2396E"
href="mailto:sky@ecologicalsystems.biz"
moz-do-not-send="true"><sky@ecologicalsystems.biz></a>
wrote: </div>
<div><br>
</div>
<div><br>
</div>
<div>
<div dir="ltr">So far the module level shutdown
requirements have been a real blow to our industry. The
reliability and cost from a maintenance and installation
standpoint has been very hit or miss so far. It feels
like this requirement was rolled out far too quickly
without enough forethought to its impact on the
industry. We are constantly going out and fixing
problems with mlsd installed by other contractors.
Thankfully the problems have nothing to do with the
quality of the installations. The problems are almost
all due to premature failure of the products or some
inherent defect in them. This is a serious issue costing
the industry time and resources and making our
installers less safe. It just doesn\u2019t really accomplish
the intended goal of the requirement. <br>
</div>
<div dir="ltr">I\u2019m curious how other wrenches are dealing
with this issue. I recently became aware of fixMLSD.com
which appears to be focused on bringing a more sensible
approach to this requirement. <br>
</div>
<div dir="ltr"><br>
</div>
<div dir="ltr">Your thoughts are appreciated,<br>
</div>
<div dir="ltr">Sky Sims<br>
</div>
<div dir="ltr"><a class="moz-txt-link-freetext"
href="Https://EcologicalSystems.biz"
moz-do-not-send="true">Https://EcologicalSystems.biz</a><br>
</div>
<div dir="ltr">\u201cJust An Old Wrench\u201d<br>
</div>
<div dir="ltr">_______________________________________________<br>
</div>
<br>
</div>
</div>
</div>
</blockquote>
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