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<div class=Section1>
<p class=MsoNormal><span style='color:#1F497D'>I would like to put forward our
commissioning test procedures with regard to voltage and insulation testing for
comment and to share if others are trying to tighten up their commissioning
procedures. I would love to hear Bill’s feedback and any input others might
have into our process and areas where we might be exposed.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Thanks in advance for your
comments.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal align=center style='text-align:center;vertical-align:middle'><b><u><span
style='font-size:12.0pt'>Sequence and Procedures for <o:p></o:p></span></u></b></p>
<p class=MsoNormal align=center style='text-align:center;vertical-align:middle'><b><u><span
style='font-size:12.0pt'>Quality Assurance Testing and System Commissioning <o:p></o:p></span></u></b></p>
<p class=MsoNormal align=center style='text-align:center;vertical-align:middle'><u><span
style='font-size:10.0pt'><o:p><span style='text-decoration:none'> </span></o:p></span></u></p>
<p class=MsoNormal style='margin-left:9.0pt;vertical-align:middle'><b><span
style='font-size:10.0pt'>Quality Assurance Testing <o:p></o:p></span></b></p>
<p class=MsoNormal style='margin-left:.75in;text-indent:-.25in;mso-list:l2 level2 lfo1;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:"Courier New"'><span style='mso-list:Ignore'>o<span
style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span
style='font-size:10.0pt'>Source Circuit Testing - Voltage and continuity to
ground of all strings<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:81.0pt;text-indent:-.25in;mso-list:l2 level3 lfo1;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>Test conditions:<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.5in;text-indent:-.25in;mso-list:l2 level4 lfo1;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Wingdings'><span style='mso-list:Ignore'>§<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>Testing to be
done at the combiner boxes<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.5in;text-indent:-.25in;mso-list:l2 level4 lfo1;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Wingdings'><span style='mso-list:Ignore'>§<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>Modules are
connected to the home runs<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.5in;text-indent:-.25in;mso-list:l2 level4 lfo1;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Wingdings'><span style='mso-list:Ignore'>§<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>Positives are
landed on the fuse block, but fuses are not yet installed in the CB<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.5in;text-indent:-.25in;mso-list:l2 level4 lfo1;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Wingdings'><span style='mso-list:Ignore'>§<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>Negatives are
cut to length and labeled but not landed in the CB<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.5in;text-indent:-.25in;mso-list:l2 level4 lfo1;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Wingdings'><span style='mso-list:Ignore'>§<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>Ground is
connected in a continuous path to the racking and modules and is landed in the
CB<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:81.0pt;text-indent:-.25in;mso-list:l2 level3 lfo1;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>Test<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.5in;text-indent:-.25in;mso-list:l2 level4 lfo1;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Wingdings'><span style='mso-list:Ignore'>§<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>Check for voltage
between each positive and all negatives - record voltages for each strings and
confirm no voltage between strings of different numbers, simultaneously verify
polarity as recording voltages<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.5in;text-indent:-.25in;mso-list:l2 level4 lfo1;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Wingdings'><span style='mso-list:Ignore'>§<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>Check for voltage
between each positive and ground - record voltage (should be 0)<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.5in;text-indent:-.25in;mso-list:l2 level4 lfo1;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Wingdings'><span style='mso-list:Ignore'>§<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>Check for voltage
between each negative and ground - record voltage (should be 0)<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.5in;text-indent:-.25in;mso-list:l2 level4 lfo1;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Wingdings'><span style='mso-list:Ignore'>§<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>Complete the
first half of the combiner box commissioning worksheet - noting weather, time
of day etc.<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:81.0pt;text-indent:-.25in;mso-list:l2 level3 lfo1;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>After the test is
complete<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.5in;text-indent:-.25in;mso-list:l2 level4 lfo1;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Wingdings'><span style='mso-list:Ignore'>§<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>Each negative can
be landed on the negative block in the CB<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.5in;text-indent:-.25in;mso-list:l2 level4 lfo1;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Wingdings'><span style='mso-list:Ignore'>§<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>Test continuity
of fuses and insert into holders - DO NOT CLOSE<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.5in'><span style='font-size:10.0pt'> <o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.75in;text-indent:-.25in;mso-list:l6 level1 lfo2;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:"Courier New"'><span style='mso-list:Ignore'>o<span
style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span
style='font-size:10.0pt'>Output Circuits - Insulation testing of wires from CB
to Inverter and verification of polarity <o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:81.0pt;text-indent:-.25in;mso-list:l6 level2 lfo2;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>Test conditions:<o:p></o:p></span></p>
<ul style='margin-top:0in' type=circle>
<ul style='margin-top:0in' type=disc>
<ul style='margin-top:0in' type=square>
<li class=MsoNormal style='mso-list:l6 level3 lfo2;vertical-align:middle'><span
style='font-size:10.0pt'>Testing to be done at the inverter<o:p></o:p></span></li>
<li class=MsoNormal style='mso-list:l6 level3 lfo2;vertical-align:middle'><span
style='font-size:10.0pt'>All wires are run in conduit, cut to length,
labeled, spliced if applicable and conduit covers are on from combiner
through to inverter<o:p></o:p></span></li>
<li class=MsoNormal style='mso-list:l6 level3 lfo2;vertical-align:middle'><span
style='font-size:10.0pt'>Only the ground wires are landed in both the CB
and the inverter <o:p></o:p></span></li>
<li class=MsoNormal style='mso-list:l6 level3 lfo2;vertical-align:middle'><span
style='font-size:10.0pt'>The GFDI fuse is removed from the inverter<o:p></o:p></span></li>
<li class=MsoNormal style='mso-list:l6 level3 lfo2;vertical-align:middle'><span
style='font-size:10.0pt'>All conductors are taped off at the opposite
end of where the Megohmeter will be attached and are safely isolated to
prevent touching of anything and in a safe position to be energized <o:p></o:p></span></li>
</ul>
</ul>
</ul>
<p class=MsoNormal style='margin-left:81.0pt;text-indent:-.25in;mso-list:l6 level2 lfo2;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>Test<o:p></o:p></span></p>
<ul style='margin-top:0in' type=circle>
<ul style='margin-top:0in' type=disc>
<ul style='margin-top:0in' type=square>
<li class=MsoNormal style='mso-list:l6 level3 lfo2;vertical-align:middle'><span
style='font-size:10.0pt'>Megger test all wires to ground at 1000Vdc <o:p></o:p></span></li>
<li class=MsoNormal style='mso-list:l6 level3 lfo2;vertical-align:middle'><span
style='font-size:10.0pt'>Megger test all wires that share a conduit at
any point in the system to each other at 1000Vdc<o:p></o:p></span></li>
<li class=MsoNormal style='mso-list:l6 level3 lfo2;vertical-align:middle'><span
style='font-size:10.0pt'>record all values and troubleshoot any wires
that have a reading under 100 M Ohms corrected for Temp and humidity<o:p></o:p></span></li>
</ul>
</ul>
</ul>
<p class=MsoNormal style='margin-left:135.0pt;text-indent:-.25in;mso-list:l6 level4 lfo2;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>If under 100 M
Ohms requires investigation and may require replacement of the wire<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:81.0pt;text-indent:-.25in;mso-list:l6 level2 lfo2;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>After the test is
complete<o:p></o:p></span></p>
<ul style='margin-top:0in' type=circle>
<ul style='margin-top:0in' type=disc>
<ul style='margin-top:0in' type=square>
<li class=MsoNormal style='mso-list:l6 level3 lfo2;vertical-align:middle'><span
style='font-size:10.0pt'>Land the positive and negative at the combiner
box<o:p></o:p></span></li>
<li class=MsoNormal style='mso-list:l6 level3 lfo2;vertical-align:middle'><span
style='font-size:10.0pt'>Close one fuse holder at CB1 and close the
integrated CB/rooftop DC disconnect protecting the output of the CB<o:p></o:p></span></li>
<li class=MsoNormal style='mso-list:l6 level3 lfo2;vertical-align:middle'><span
style='font-size:10.0pt'>test for voltage and polarity between the
positive and negative output circuits from CB1 at the inverter and
verify that they are properly labeled<o:p></o:p></span></li>
<li class=MsoNormal style='mso-list:l6 level3 lfo2;vertical-align:middle'><span
style='font-size:10.0pt'>Open the CB/rooftop DC disconnect and then open
the fuse holder in CB#1<o:p></o:p></span></li>
<li class=MsoNormal style='mso-list:l6 level3 lfo2;vertical-align:middle'><span
style='font-size:10.0pt'>Verify that the voltage has bled down to zero
then land the positive and negative wires for this combiner box at the
inverter<o:p></o:p></span></li>
<li class=MsoNormal style='mso-list:l6 level3 lfo2;vertical-align:middle'><span
style='font-size:10.0pt'>Repeat steps for each CB until all polarity and
wire locations are identified and landed<o:p></o:p></span></li>
<li class=MsoNormal style='mso-list:l6 level3 lfo2;vertical-align:middle'><span
style='font-size:10.0pt'>Once all the positive and negative wires from
the CB's are landed, if applicable test continuity of the fuses at the
inverter disconnect and insert into holders <o:p></o:p></span></li>
</ul>
</ul>
</ul>
<p class=MsoNormal style='margin-left:1.5in;vertical-align:middle'><span
style='font-size:10.0pt'><o:p> </o:p></span></p>
<p class=MsoNormal style='margin-left:.75in;text-indent:-.25in;mso-list:l6 level1 lfo2;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:"Courier New"'><span style='mso-list:Ignore'>o<span
style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span
style='font-size:10.0pt'>AC Wiring Circuits - Insulation testing of wires from
AC Tie in point (POCC) to Inverter and verification of phasing<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:81.0pt;text-indent:-.25in;mso-list:l6 level2 lfo2;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>Test conditions:<o:p></o:p></span></p>
<ul style='margin-top:0in' type=circle>
<ul style='margin-top:0in' type=disc>
<ul style='margin-top:0in' type=square>
<li class=MsoNormal style='mso-list:l6 level3 lfo2;vertical-align:middle'><span
style='font-size:10.0pt'>Testing to be done at the inverter<o:p></o:p></span></li>
<li class=MsoNormal style='mso-list:l6 level3 lfo2;vertical-align:middle'><span
style='font-size:10.0pt'>All wires are run in conduit, cut to length,
labeled, spliced if applicable and conduit covers are on from AC Point
of Connection through to the inverter<o:p></o:p></span></li>
<li class=MsoNormal style='mso-list:l6 level3 lfo2;vertical-align:middle'><span
style='font-size:10.0pt'>Only the ground wires are landed in both the
Main Service Panel and the inverter <o:p></o:p></span></li>
<li class=MsoNormal style='mso-list:l6 level3 lfo2;vertical-align:middle'><span
style='font-size:10.0pt'>The GFDI fuse is removed from the inverter<o:p></o:p></span></li>
<li class=MsoNormal style='mso-list:l6 level3 lfo2;vertical-align:middle'><span
style='font-size:10.0pt'>All conductors are taped off at the opposite
end of where the Megohmeter will be attached and are safely isolated to
prevent touching of anything and in a safe position to be energized<o:p></o:p></span></li>
</ul>
</ul>
</ul>
<p class=MsoNormal style='margin-left:81.0pt;text-indent:-.25in;mso-list:l6 level2 lfo2;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>Test<o:p></o:p></span></p>
<ul style='margin-top:0in' type=circle>
<ul style='margin-top:0in' type=disc>
<ul style='margin-top:0in' type=square>
<li class=MsoNormal style='mso-list:l6 level3 lfo2;vertical-align:middle'><span
style='font-size:10.0pt'>Megger test all wires to ground at 1000Vdc <o:p></o:p></span></li>
<li class=MsoNormal style='mso-list:l6 level3 lfo2;vertical-align:middle'><span
style='font-size:10.0pt'>Megger test all wires that share a conduit at
any point in the system to each other at 1000Vdc<o:p></o:p></span></li>
<li class=MsoNormal style='mso-list:l6 level3 lfo2;vertical-align:middle'><span
style='font-size:10.0pt'>record all values and troubleshoot any wires
that have a reading under 100 M Ohms corrected for Temp and humidity<o:p></o:p></span></li>
</ul>
</ul>
</ul>
<p class=MsoNormal style='margin-left:135.0pt;text-indent:-.25in;mso-list:l6 level4 lfo2;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>If under 100 M
Ohms requires investigation and may require replacement of the wire<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:81.0pt;text-indent:-.25in;mso-list:l6 level2 lfo2;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>After the test is
complete<o:p></o:p></span></p>
<ul style='margin-top:0in' type=circle>
<ul style='margin-top:0in' type=disc>
<ul style='margin-top:0in' type=square>
<li class=MsoNormal style='mso-list:l6 level3 lfo2;vertical-align:middle'><span
style='font-size:10.0pt'>Land the conductors in the inverter being sure
to follow the inverter manufacturer’s guidelines for torque settings and
use a permanent marker to create a straight line across the screw
indicating the proper torque setting<o:p></o:p></span></li>
<li class=MsoNormal style='mso-list:l6 level3 lfo2;vertical-align:middle'><span
style='font-size:10.0pt'>This test will likely be completed before the
building shut down to interconnect the system. Do not land the
conductors at the AC tie-in point until the panel has been properly
de-energized<o:p></o:p></span></li>
<li class=MsoNormal style='mso-list:l6 level3 lfo2;vertical-align:middle'><span
style='font-size:10.0pt'>After the Service Panel or tie-in point is
de-energized, land the conductors at the AC tie-in point. Be sure to
follow the manufacturer’s guidelines for proper torque settings and use
a permanent marker to create a straight line across the screw indicating
the proper torque setting.<o:p></o:p></span></li>
</ul>
</ul>
</ul>
<p class=MsoListParagraph style='mso-margin-top-alt:0in;margin-right:0in;
margin-bottom:0in;margin-left:49.5pt;margin-bottom:.0001pt;text-indent:-13.5pt;
line-height:normal;mso-list:l6 level1 lfo2'><![if !supportLists]><span
style='font-size:10.0pt;font-family:"Courier New"'><span style='mso-list:Ignore'>o<span
style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span
style='font-size:10.0pt'>Connection testing<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:81.0pt;text-indent:-.25in;mso-list:l4 level2 lfo3;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>Test conditions:<o:p></o:p></span></p>
<ul style='margin-top:0in' type=circle>
<ul style='margin-top:0in' type=disc>
<ul style='margin-top:0in' type=square>
<li class=MsoNormal style='mso-list:l4 level3 lfo3;vertical-align:middle'><span
style='font-size:10.0pt'>Testing to be done at all locations<o:p></o:p></span></li>
<li class=MsoNormal style='mso-list:l4 level3 lfo3;vertical-align:middle'><span
style='font-size:10.0pt'>All wires are landed<o:p></o:p></span></li>
</ul>
</ul>
</ul>
<p class=MsoNormal style='margin-left:81.0pt;text-indent:-.25in;mso-list:l4 level2 lfo3;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>Test<o:p></o:p></span></p>
<ul style='margin-top:0in' type=circle>
<ul style='margin-top:0in' type=disc>
<ul style='margin-top:0in' type=square>
<li class=MsoNormal style='mso-list:l4 level3 lfo3;vertical-align:middle'><span
style='font-size:10.0pt'>Test all wires for proper torque settings -
refer to manufacturer installation manual<o:p></o:p></span></li>
<li class=MsoNormal style='mso-list:l4 level3 lfo3;vertical-align:middle'><span
style='font-size:10.0pt'>Physically tug on all wires for a visual
inspection of loose connections <o:p></o:p></span></li>
</ul>
</ul>
</ul>
<p class=MsoNormal style='margin-left:1.5in'><span style='font-size:10.0pt'>NOTE
- All conductors #4 and larger should be marked with a straight line on the
screw once they have been tightened to the appropriate setting<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:81.0pt;text-indent:-.25in;mso-list:l0 level1 lfo4;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>After the test is
complete<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.5in;text-indent:-.25in;mso-list:l0 level2 lfo4;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Wingdings'><span style='mso-list:Ignore'>§<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>Close all fuse
holders at each combiner box<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.5in;text-indent:-.25in;mso-list:l0 level2 lfo4;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Wingdings'><span style='mso-list:Ignore'>§<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>Close all DC
disconnects associated with each combiner box<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.5in'><span style='font-size:10.0pt'> <o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:9.0pt;vertical-align:middle'><b><span
style='font-size:10.0pt'>System Commissioning<o:p></o:p></span></b></p>
<p class=MsoNormal style='margin-left:1.0in;text-indent:-.5in;mso-list:l5 level2 lfo5;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:"Courier New"'><span style='mso-list:Ignore'>o<span
style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span
style='font-size:10.0pt'>You are now ready to Commission the inverter<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.75in;text-indent:-.25in;mso-list:l5 level2 lfo5;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:"Courier New"'><span style='mso-list:Ignore'>o<span
style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span
style='font-size:10.0pt'>Follow inverter manufacturer commissioning procedures<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.75in;text-indent:-.25in;mso-list:l5 level2 lfo5;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:"Courier New"'><span style='mso-list:Ignore'>o<span
style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span
style='font-size:10.0pt'>Complete the balance of the combiner box commissioning
worksheet, the initial start up and inverter commissioning worksheet<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:.75in'><span style='font-size:10.0pt'><o:p> </o:p></span></p>
<p class=MsoNormal style='margin-left:.75in'><span style='font-size:10.0pt'><o:p> </o:p></span></p>
<p class=MsoNormal style='margin-left:81.0pt;text-indent:-.25in;mso-list:l3 level1 lfo6;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>Imp Testing of
source circuits<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.5in;text-indent:-.25in;mso-list:l3 level2 lfo6;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Wingdings'><span style='mso-list:Ignore'>§<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>Test conditions:<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:135.0pt;text-indent:-.25in;mso-list:l3 level3 lfo6;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>Testing to be
conducted at combiner boxes<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:135.0pt;text-indent:-.25in;mso-list:l3 level3 lfo6;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>System is up and
running <o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.5in;text-indent:-.25in;mso-list:l3 level2 lfo6;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Wingdings'><span style='mso-list:Ignore'>§<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>Test<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:135.0pt;text-indent:-.25in;mso-list:l3 level3 lfo6;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>At each combiner
box, check for operating current of each string by placing a clamp meter around
each positive source circuit - record the value on the combiner box
commissioning worksheet<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:135.0pt;text-indent:-.25in;mso-list:l3 level3 lfo6;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>Simultaneously
record the irradiance value at the plane of the module for the strings of which
you are testing<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:135.0pt;text-indent:-.25in;mso-list:l3 level3 lfo6;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>Repeat for all
strings in the combiner box <o:p></o:p></span></p>
<p class=MsoListParagraph style='mso-margin-top-alt:0in;margin-right:0in;
margin-bottom:0in;margin-left:1.0in;margin-bottom:.0001pt;text-indent:-.25in;
line-height:normal;mso-list:l3 level2 lfo6'><![if !supportLists]><span
style='font-size:10.0pt;font-family:Wingdings'><span style='mso-list:Ignore'>§<span
style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span
style='font-size:10.0pt'>Imp Testing of output circuits<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.5in;text-indent:-.25in;mso-list:l1 level2 lfo7;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Wingdings'><span style='mso-list:Ignore'>§<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>Test conditions:<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:135.0pt;text-indent:-.25in;mso-list:l1 level3 lfo7;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>Testing to be
conducted at the inverter<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:135.0pt;text-indent:-.25in;mso-list:l1 level3 lfo7;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>System is up and
running<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:1.5in;text-indent:-.25in;mso-list:l1 level2 lfo7;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Wingdings'><span style='mso-list:Ignore'>§<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>Test<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:135.0pt;text-indent:-.25in;mso-list:l1 level3 lfo7;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>Check for
operating current of each CB output circuit by placing a clamp meter around
each positive wire - record the value on the inverter commissioning worksheet<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:135.0pt;text-indent:-.25in;mso-list:l1 level3 lfo7;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>Simultaneously
record the irradiance value at the plane of the representative modules for the
combiner box of which you are testing <o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:135.0pt;text-indent:-.25in;mso-list:l1 level3 lfo7;
vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;
font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:10.0pt'>Repeat for all
output circuits from each combiner box</span><span style='font-size:10.0pt'><o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<div>
<p class=MsoNormal><span style='color:#595959'>-Chris Anderson<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;color:#595959'> Chief
Technology Officer<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;color:#595959'> Resources
Group <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;color:#595959'> C: 603-732-2411<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;color:#595959'> Borrego Solar
Systems<o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='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>David
Palumbo<br>
<b>Sent:</b> Monday, September 14, 2009 10:58 PM<br>
<b>To:</b> 'RE-wrenches'<br>
<b>Subject:</b> Re: [RE-wrenches] Insulation testing<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>I’d
like to see if we can complete the thread on insulation testers (Meggers).
Below is a copy of Bill Brooks last posting on this subject from several weeks
ago. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>Bill
says the keys are to use the tester and in “performing the tests properly and
safely which requires test procedures”. What are the proper testing procedures?
We have a Fluke 1503 and the information that came with it is not very helpful
in setting up a testing procedure. The DVD that came with it is more of a sales
tool on why you should have the tool. We already have the tool. We want to know
how to use the tool. Can anybody give advice on this?<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'><<
I bought two insulation testers (Megger is a brand name) in April. A used<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>Fluke
1520 off Ebay for $275 and a new inexpensive (cheap) insulation tester<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>on
Amazon (Electronic Specialties 550 Insulation Tester for $162). Both work<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>fine.
The Fluke has better accuracy that I need for very specialized "field<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>wet
resistance testing" (FWRT). However, the cheap tester works great for<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>finding
faults in conductors and severe faults in modules. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>I
bought both to determine if a cheap meter would work and the answer is<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>YES.
The key is performing the tests properly and safely which requires test<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>procedures.
The other key to actually use the tester. Several people own<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>these
devices, but never use them. They should be used on every installation<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>after
the wire is installed to determine if any wire damage is visible to<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>the
tester. Even though this will not solve all field mistakes, it will<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>catch
the marginal problems that may be too small to be detected by the GFP<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>circuit
in the inverter.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>Bill.
>><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><i>David Palumbo<o:p></o:p></i></p>
<p class=MsoNormal><i>President, Independent Power LLC<o:p></o:p></i></p>
<p class=MsoNormal><i>462 Solar Way Drive, Hyde Park, VT 05655<o:p></o:p></i></p>
<p class=MsoNormal>NABCEP Certified<o:p></o:p></p>
<p class=MsoNormal><i>www.independentpowerllc.com <o:p></o:p></i></p>
<p class=MsoNormal><i>(802) 888-7194<o:p></o:p></i></p>
<p class=MsoNormal><o:p> </o:p></p>
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