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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>This has always bugged me about the flat roof installs, seeing
the photos of workers out on the glass in the middle of the array. Hmmm.
I’d love to see which manufacturers actually approve of this sort of
loading! It would be nice to also have a list of which ones are using the
thicker glazing too.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:navy'>Sincerely,<br>
<br>
Chris Worcester<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:navy'>Solar Wind Works<br>
NABCEP Certified PV Installer<br>
Phone: 530-582-4503<br>
Fax: 530-582-4603<br>
<a href="http://www.solarwindworks.com/">www.solarwindworks.com</a><br>
<a href="mailto:chris@solarwindworks.com">chris@solarwindworks.com</a><br>
"Proven Energy Solutions"</span><span style='font-size:11.0pt;
font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><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>On Behalf Of </b>Bob-O
Schultze<br>
<b>Sent:</b> Monday, May 24, 2010 9:32 AM<br>
<b>To:</b> RE-wrenches<br>
<b>Subject:</b> Re: [RE-wrenches] 30-year old PV module<o:p></o:p></span></p>
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</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Joel,<o:p></o:p></p>
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<p class=MsoNormal>A good argument against ever increasing PV sizes and a great
argument against big PVs on RVs and other mobile mounts.<o:p></o:p></p>
</div>
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<p class=MsoNormal>Thanks, Bob-O<o:p></o:p></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<div>
<p class=MsoNormal>On May 22, 2010, at 4:42 PM, Joel Davidson wrote:<o:p></o:p></p>
</div>
<p class=MsoNormal><br>
<br>
<span class=apple-style-span><span style='font-size:13.5pt;font-family:"Helvetica","sans-serif"'><o:p></o:p></span></span></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Hello
Drake,</span><o:p></o:p></p>
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<p class=MsoNormal><span style='font-size:13.5pt;font-family:"Helvetica","sans-serif"'> <o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>(silicon
not silicone) Good question about thickness. I recently inspected a circa
1996 solar array with 300 micron thick, 6-inch round cells
encapsulated behind 3 mm thick glass and found a few cracked cells
and impact fractures. Today, some cells are 260 to 200 microns and even
down to 180 to 160 microns thick. I think if the cells are handled properly,
and the glass is 4 mm thick, and the module frame is strong enough to minimize
twisting, and the modules are handled and installed with care, then cell breakage
can be kept to a minimum. It's not how thin the cells are. It is how the
cells and modules are encapsulated and handled.</span><span style='font-size:
13.5pt;font-family:"Helvetica","sans-serif"'><o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:13.5pt;font-family:"Helvetica","sans-serif"'> <o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Joel
Davidson</span><span style='font-size:13.5pt;font-family:"Helvetica","sans-serif"'><o:p></o:p></span></p>
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<blockquote style='border:none;border-left:solid black 1.5pt;padding:0in 0in 0in 4.0pt;
margin-left:3.75pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt;
z-index:auto'>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>-----
Original Message -----<o:p></o:p></span></p>
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<div>
<p class=MsoNormal style='background:#E4E4E4'><b><span style='font-size:10.0pt;
font-family:"Arial","sans-serif"'>From:</span></b><span
class=apple-converted-space><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span></span><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'><a
href="mailto:drake.chamberlin@redwoodalliance.org"
title="drake.chamberlin@redwoodalliance.org">Drake Chamberlin</a><o:p></o:p></span></p>
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<div>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>To:</span></b><span
class=apple-converted-space><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span></span><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'><a
href="mailto:re-wrenches@lists.re-wrenches.org"
title="re-wrenches@lists.re-wrenches.org">RE-wrenches</a><o:p></o:p></span></p>
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<div>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Sent:</span></b><span
class=apple-converted-space><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span></span><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Saturday, May 22,
2010 1:39 PM<o:p></o:p></span></p>
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<div>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Subject:</span></b><span
class=apple-converted-space><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span></span><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Re: [RE-wrenches]
30-year old PV module<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:13.5pt;font-family:"Helvetica","sans-serif"'><o:p> </o:p></span></p>
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<p class=MsoNormal><span style='font-size:13.5pt;font-family:"Helvetica","sans-serif"'>Thanks
for the excellent article. I have two of these old Arcos, and they still
put out like new, even though one was (apparently) used in a concentrator, due
to the fact that it came bronzed. <span class=apple-converted-space> </span><br>
<br>
Do you think the newer modules, with thinner silicone, will last as long?<o:p></o:p></span></p>
</blockquote>
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