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<p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:#1F497D'>Nick
–<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:#1F497D'>It
would be great if a load exception could be made but I’ve never heard of it. Do
you have any references to the code? -August<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p>
<div>
<p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:#1F497D'>August
Goers<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:#1F497D'>Luminalt
Energy Corporation<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:#1F497D'>O:
415.564.7652<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:#1F497D'>M:
415.559.1525<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:#1F497D'>F:
650.244.9167<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:#1F497D'>august@luminalt.com<o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p>
<div>
<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>Nick
Soleil<br>
<b>Sent:</b> Wednesday, March 31, 2010 12:15 PM<br>
<b>To:</b> RE-wrenches<br>
<b>Subject:</b> Re: [RE-wrenches] Supply Side Tap Overcurrent Protection<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<div>
<p class=MsoNormal> I feel confident that the load will not
be over 80 Amps at any time, and therefore do not think that a service upgrade
is necessary. If the load is increased in the future (as in any
situation,) the panel may need to be upgraded in the future. By 'legal,'
I assume you mean that it is approved by the applicable codes. <o:p></o:p></p>
<div>
<p class=MsoNormal> I do agree that according to the
120% rule, the bussing is undersized, and a service upgrade would be a good
solution. However, I have heard that an exception can be made if a load
analysis is provided. My questions is specifically about the
exception. I have a firm understanding of my other options. <o:p></o:p></p>
</div>
<p class=MsoNormal>Nick Soleil<br>
Project Manager<br>
Advanced Alternative Energy Solutions, LLC<br>
PO Box 657<br>
Petaluma, CA 94953<br>
Cell: 707-321-2937<br>
Office: 707-789-9537<br>
Fax: 707-769-9037<o:p></o:p></p>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<div>
<p class=MsoNormal><o:p> </o:p></p>
<div>
<div class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
<hr size=1 width="100%" align=center>
</span></div>
<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"'> Eric Andrews
<eric@ecosolarnow.com><br>
<b>To:</b> RE-wrenches <re-wrenches@lists.re-wrenches.org><br>
<b>Sent:</b> Wed, March 31, 2010 9:19:48 AM<br>
<b>Subject:</b> Re: [RE-wrenches] Supply Side Tap Overcurrent Protection<br>
</span><br>
<br>
<span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p></o:p></span></p>
<div>
<p class=MsoNormal><span style='color:#C00000'>We recommend to the customer to
upgrade their service if it’s not adequate (old/outdated/too small). In
the grand scheme of things, that’s a small add-on. Whenever there’s a
questionable interconnect, it’s always prudent to get a pre-approval from your
AHJ and your utility. A supply side tap may be just as cumbersome as
upgrading the service. There is no magic “load analysis” approval in the
NEC for an owner load that’s significantly under loading their service. I
would say your AHJ will have the final answer on your situation. They
will appreciate being brought into the situation before work has been done.</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#C00000'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#C00000'>Also, if the service panel is
rated for 100 amps then you can legally interconnect 20 x .8 = 16.7 amps per
the 120% rule. 30A and 40A breakers?</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#C00000'> </span><o:p></o:p></p>
<div>
<p class=MsoNormal><span style='font-size:12.0pt;color:#C00000'>Eric R. Andrews</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:8.0pt;color:black'>NABCEP Certified
PV Installer</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:12.0pt;color:#C00000'> </span><o:p></o:p></p>
</div>
<p class=MsoNormal><span style='color:#C00000'>>></span> <o:p></o:p></p>
<p class=MsoNormal><span style='color:#C00000'>>> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#C00000'> </span><o:p></o:p></p>
<div>
<p class=MsoNormal> Downsize the main breaker? I would
if I could, but the customer only has 100 Amps now, and the solar is fed with
two breakers, a 30A and a 40A. So to be under 120Amps, I would have to
size the main to 50 Amps, which may be problematic.<br>
I can also do the line side tap, but had heard that a load
analysis may be accepted instead. The loads of the house will never use
more than 100 Amps. I am wondering if any codes or white papers detail
that option. <o:p></o:p></p>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<p class=MsoNormal>Nick Soleil<br>
Project Manager<br>
Advanced Alternative Energy Solutions, LLC<br>
PO Box 657<br>
Petaluma, CA 94953<br>
Cell: 707-321-2937<br>
Office: 707-789-9537<br>
Fax: 707-769-9037<o:p></o:p></p>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
<div>
<div class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt'>
<hr size=1 width="100%" align=center>
</span></div>
<p class=MsoNormal style='margin-bottom:12.0pt'><b><span style='font-size:10.0pt'>From:</span></b><span
style='font-size:10.0pt'> Eric Andrews <eric@ecosolarnow.com><br>
<b>To:</b> RE-wrenches <re-wrenches@lists.re-wrenches.org><br>
<b>Sent:</b> Tue, March 30, 2010 10:25:45 AM<br>
<b>Subject:</b> Re: [RE-wrenches] Supply Side Tap Overcurrent Protection<br>
<br>
</span><o:p></o:p></p>
<div>
<p class=MsoNormal><span style='color:#C00000'>Nick-</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#C00000'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#C00000'>Just downsize the main
breaker. For example, a 200 amp panel w/ a 200 amp main breaker could be
reduced to a 150 amp main breaker to allow for more solar to be
connected. You need to calculate for the 120% rule.</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#C00000'> </span><o:p></o:p></p>
<div>
<p class=MsoNormal><span style='font-size:12.0pt;color:#C00000'>Eric R. Andrews</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:8.0pt;color:black'>NABCEP Certified
PV Installer</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:12.0pt;color:#C00000'> </span><o:p></o:p></p>
</div>
</div>
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<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'> </span><o:p></o:p></p>
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<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p> </o:p></span></p>
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