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<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'>Nick,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'>This was addressed in the Fronius online
newsletter that came out yesterday.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'><o:p> </o:p></span></font></p>
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<td width=420 bgcolor="#EF2D2A" style='width:315.0pt;background:#EF2D2A;
padding:3.75pt 3.75pt 2.25pt 15.0pt'>
<p style='line-height:16.5pt'><font size=4 color=white face=Helvetica><span
style='font-size:13.0pt;font-family:Helvetica;color:white'>Two Buss Bars
– the ins and outs of connection<o:p></o:p></span></font></p>
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<td width=260 rowspan=2 valign=top style='width:195.0pt;padding:0in 15.0pt 7.5pt 7.5pt'>
<p class=MsoNormal style='line-height:16.5pt'><font size=2 color=black
face=Helvetica><span style='font-size:10.5pt;font-family:Helvetica;
color:black'><img width=250 height=385 id="_x0000_i1026"
src="cid:image001.jpg@01C9F1B2.0C4215A0" alt="Fronius buss bars"><br>
Sold individually. Make sure to order two Buss Bars – one for each leg
of the trip.<o:p></o:p></span></font></p>
</td>
</tr>
<tr>
<td colspan=2 style='padding:7.5pt 3.75pt 11.25pt 30.0pt'>
<p style='line-height:16.5pt'><font size=2 color=black face=Helvetica><span
style='font-size:10.5pt;font-family:Helvetica;color:black'>Fronius IG Plus
Inverters have a six-string fused combiner built into every unit. It may not
be practical to use it if the array is far away from the inverter or if local
codes require fused combiners on the roof or in close proximity to the
modules themselves. In either situation it is important to note that the
terminals are only rated to accept 20ADC. <o:p></o:p></span></font></p>
<p style='line-height:16.5pt'><font size=2 color=black face=Helvetica><span
style='font-size:10.5pt;font-family:Helvetica;color:black'>Whenever you are
bringing in a conductor that may have more then 20ADC on it, you are required
to use a Fronius Buss Bar (Part Number 42,0201,2923). This is a six-tined
copper conductor with 2-3/8” holes and a single 1/4” hole for use
with a lug of the installers’ choice. <o:p></o:p></span></font></p>
<p style='line-height:16.5pt'><font size=2 color=black face=Helvetica><span
style='font-size:10.5pt;font-family:Helvetica;color:black'>We are dealing
with DC currents here and once those electrons make their run through the
inverter they need a path back to the modules. Again, we cannot load the
terminals with more then 20ADC, so please make sure to get a <strong><b><font
face=Helvetica><span style='font-family:Helvetica'>second Buss Bar</span></font></b></strong>
for the return trip. <o:p></o:p></span></font></p>
<p style='line-height:16.5pt'><font size=2 color=black face=Helvetica><span
style='font-size:10.5pt;font-family:Helvetica;color:black'>If you have any
questions about applications that would require a Buss Bar, please contact
Fronius Solar Technical Support at 810-220-4414 or e-mail <a
href="mailto:pv-us-support@fronius.com"
title="mailto:pv-us-support@fronius.com" shape=rect>pv-us-support@fronius.com</a>.<o:p></o:p></span></font></p>
</td>
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<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'>Allan Sindelar<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face="Times New Roman"><span
style='font-size:10.0pt;color:black'><a
href="mailto:Allan@positiveenergysolar.com">Allan@positiveenergysolar.com</a></span></font><font
color=black><span style='color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face="Times New Roman"><span
style='font-size:10.0pt;color:black'>NABCEP Certified Photovoltaic Installer</span></font><font
color=black><span style='color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face="Times New Roman"><span
style='font-size:10.0pt;color:black'>EE98J Journeyman Electrician</span></font><font
color=black><span style='color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'>Positive Energy, Inc.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'>3201 Calle Marie<o:p></o:p></span></font></p>
<p class=MsoNormal><st1:place w:st="on"><st1:City w:st="on"><font size=3
color=black face="Times New Roman"><span style='font-size:12.0pt;color:black'>Santa
Fe</span></font></st1:City><font color=black><span style='color:black'>, <st1:State
w:st="on">New Mexico</st1:State> <st1:PostalCode w:st="on">87507</st1:PostalCode></span></font></st1:place><font
color=black><span style='color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'>505 424-1112<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'><a
href="http://www.positiveenergysolar.com">www.positiveenergysolar.com</a></span></font><o:p></o:p></p>
</div>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> re-wrenches-bounces@lists.re-wrenches.org
[mailto:re-wrenches-bounces@lists.re-wrenches.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Nick Vida<br>
<b><span style='font-weight:bold'>Sent:</span></b> Saturday, June 20, 2009 1:23
PM<br>
<b><span style='font-weight:bold'>To:</span></b>
re-wrenches@lists.re-wrenches.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> [RE-wrenches] fronius IG
Plus practical engineering WAA???</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<div>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>hey Wrenches.<br>
<br>
I opened my soon to be installed fronius IG Plus to see what was going on in
there, and found myself a bit disappointed. There is a 6 string combiner in
there which is fine, however there is no bypass for the fusing section and the
terminals are rated at 20 amps. In a situation where you have 6 strings, you
cannont combine on the roof and run down with a pair of conductors, instead you
must run down with your strings. This means instead of running 3/4 conduit for
8awg pair and ground, I would have to run 1" conduit for 6 pairs of 10 awg
and ground. <br>
(thats a lot of flex for a 2x4!!) So if I need a disconect on the roof, I
would need 2 disconects, and correct me if im wrong-- but i would need 4
disconects in the future because this is a transformerless inverter. <br>
I also noticed that they are still using those mediocre white plastic terminals
for the ac connection that so many people found annoying.<br>
And fyi, there are no fuses in the fusing section, so dont forget to order
them.<o:p></o:p></span></font></p>
</div>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
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