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<DIV dir=ltr align=left><SPAN class=468075900-17092009><FONT color=#0000ff
size=2 face=Arial>Seems like it would be useful if you could simply post the
link here - it is relevant & I'd like to eyeball the document as
well!</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=468075900-17092009><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=468075900-17092009><FONT color=#0000ff
size=2 face=Arial>-Glenn Burt</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=468075900-17092009><FONT color=#0000ff
size=2 face=Arial>Technical Specialist</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=468075900-17092009><FONT color=#0000ff
size=2 face=Arial>Alteris Renewables, Inc.</FONT></SPAN></DIV><BR>
<DIV dir=ltr lang=en-us class=OutlookMessageHeader align=left>
<HR tabIndex=-1>
<FONT size=2 face=Tahoma><B>From:</B> re-wrenches-bounces@lists.re-wrenches.org
[mailto:re-wrenches-bounces@lists.re-wrenches.org] <B>On Behalf Of </B>Chris
Anderson<BR><B>Sent:</B> Wednesday, September 16, 2009 2:37 PM<BR><B>To:</B>
RE-wrenches<BR><B>Subject:</B> Re: [RE-wrenches] Insulation
testing<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV class=Section1>
<P class=MsoNormal><SPAN style="COLOR: #1f497d">I also have a link to a great
FLUKE document on the insulation testing. (meggering
wires)<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d">I can send it to you offline if
you would like a copy.<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="COLOR: #595959; FONT-SIZE: 9pt"> Chief
Technology Officer<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #595959; FONT-SIZE: 9pt"> Resources
Group <o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #595959; FONT-SIZE: 9pt"> C:
603-732-2411<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #595959; FONT-SIZE: 9pt"> 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-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 3pt">
<P class=MsoNormal><B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt">From:</SPAN></B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt">
re-wrenches-bounces@lists.re-wrenches.org
[mailto:re-wrenches-bounces@lists.re-wrenches.org] <B>On Behalf Of </B>Chris
Anderson<BR><B>Sent:</B> Wednesday, September 16, 2009 2:19 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="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 style="TEXT-ALIGN: center; VERTICAL-ALIGN: middle" class=MsoNormal
align=center><B><U><SPAN style="FONT-SIZE: 12pt">Sequence and Procedures for
<o:p></o:p></SPAN></U></B></P>
<P style="TEXT-ALIGN: center; VERTICAL-ALIGN: middle" class=MsoNormal
align=center><B><U><SPAN style="FONT-SIZE: 12pt">Quality Assurance Testing and
System Commissioning <o:p></o:p></SPAN></U></B></P>
<P style="TEXT-ALIGN: center; VERTICAL-ALIGN: middle" class=MsoNormal
align=center><U><SPAN style="FONT-SIZE: 10pt"><o:p><SPAN
style="TEXT-DECORATION: none"> </SPAN></o:p></SPAN></U></P>
<P style="MARGIN-LEFT: 9pt; VERTICAL-ALIGN: middle" class=MsoNormal><B><SPAN
style="FONT-SIZE: 10pt">Quality Assurance Testing <o:p></o:p></SPAN></B></P>
<P
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 0.75in; VERTICAL-ALIGN: middle; mso-list: l2 level2 lfo1"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">o<SPAN
style="FONT: 7pt 'Times New Roman'"> </SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">Source Circuit
Testing - Voltage and continuity to ground of all strings<o:p></o:p></SPAN></P>
<P
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 81pt; VERTICAL-ALIGN: middle; mso-list: l2 level3 lfo1"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">·<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">Test
conditions:<o:p></o:p></SPAN></P>
<P
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 1.5in; VERTICAL-ALIGN: middle; mso-list: l2 level4 lfo1"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Wingdings; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">§<SPAN style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">Testing to be done
at the combiner boxes<o:p></o:p></SPAN></P>
<P
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 1.5in; VERTICAL-ALIGN: middle; mso-list: l2 level4 lfo1"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Wingdings; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">§<SPAN style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">Modules are
connected to the home runs<o:p></o:p></SPAN></P>
<P
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 1.5in; VERTICAL-ALIGN: middle; mso-list: l2 level4 lfo1"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Wingdings; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">§<SPAN style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">Positives are
landed on the fuse block, but fuses are not yet installed in the
CB<o:p></o:p></SPAN></P>
<P
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 1.5in; VERTICAL-ALIGN: middle; mso-list: l2 level4 lfo1"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Wingdings; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">§<SPAN style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">Negatives are
cut to length and labeled but not landed in the CB<o:p></o:p></SPAN></P>
<P
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 1.5in; VERTICAL-ALIGN: middle; mso-list: l2 level4 lfo1"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Wingdings; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">§<SPAN style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">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
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 81pt; VERTICAL-ALIGN: middle; mso-list: l2 level3 lfo1"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">·<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN
style="FONT-SIZE: 10pt">Test<o:p></o:p></SPAN></P>
<P
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 1.5in; VERTICAL-ALIGN: middle; mso-list: l2 level4 lfo1"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Wingdings; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">§<SPAN style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">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
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 1.5in; VERTICAL-ALIGN: middle; mso-list: l2 level4 lfo1"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Wingdings; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">§<SPAN style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">Check for voltage
between each positive and ground - record voltage (should be
0)<o:p></o:p></SPAN></P>
<P
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 1.5in; VERTICAL-ALIGN: middle; mso-list: l2 level4 lfo1"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Wingdings; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">§<SPAN style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">Check for voltage
between each negative and ground - record voltage (should be
0)<o:p></o:p></SPAN></P>
<P
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 1.5in; VERTICAL-ALIGN: middle; mso-list: l2 level4 lfo1"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Wingdings; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">§<SPAN style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">Complete the first
half of the combiner box commissioning worksheet - noting weather, time of day
etc.<o:p></o:p></SPAN></P>
<P
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 81pt; VERTICAL-ALIGN: middle; mso-list: l2 level3 lfo1"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">·<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">After the test is
complete<o:p></o:p></SPAN></P>
<P
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 1.5in; VERTICAL-ALIGN: middle; mso-list: l2 level4 lfo1"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Wingdings; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">§<SPAN style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">Each negative can
be landed on the negative block in the CB<o:p></o:p></SPAN></P>
<P
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 1.5in; VERTICAL-ALIGN: middle; mso-list: l2 level4 lfo1"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Wingdings; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">§<SPAN style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">Test continuity of
fuses and insert into holders - DO NOT CLOSE<o:p></o:p></SPAN></P>
<P style="MARGIN-LEFT: 1.5in" class=MsoNormal><SPAN
style="FONT-SIZE: 10pt"> <o:p></o:p></SPAN></P>
<P
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 0.75in; VERTICAL-ALIGN: middle; mso-list: l6 level1 lfo2"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">o<SPAN
style="FONT: 7pt 'Times New Roman'"> </SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">Output Circuits -
Insulation testing of wires from CB to Inverter and verification of
polarity <o:p></o:p></SPAN></P>
<P
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 81pt; VERTICAL-ALIGN: middle; mso-list: l6 level2 lfo2"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">·<SPAN style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">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 style="VERTICAL-ALIGN: middle; mso-list: l6 level3 lfo2"
class=MsoNormal><SPAN style="FONT-SIZE: 10pt">Testing to be done at the
inverter<o:p></o:p></SPAN>
<LI style="VERTICAL-ALIGN: middle; mso-list: l6 level3 lfo2"
class=MsoNormal><SPAN style="FONT-SIZE: 10pt">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 style="VERTICAL-ALIGN: middle; mso-list: l6 level3 lfo2"
class=MsoNormal><SPAN style="FONT-SIZE: 10pt">Only the ground wires are
landed in both the CB and the inverter <o:p></o:p></SPAN>
<LI style="VERTICAL-ALIGN: middle; mso-list: l6 level3 lfo2"
class=MsoNormal><SPAN style="FONT-SIZE: 10pt">The GFDI fuse is removed
from the inverter<o:p></o:p></SPAN>
<LI style="VERTICAL-ALIGN: middle; mso-list: l6 level3 lfo2"
class=MsoNormal><SPAN style="FONT-SIZE: 10pt">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
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 81pt; VERTICAL-ALIGN: middle; mso-list: l6 level2 lfo2"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">·<SPAN style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN
style="FONT-SIZE: 10pt">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 style="VERTICAL-ALIGN: middle; mso-list: l6 level3 lfo2"
class=MsoNormal><SPAN style="FONT-SIZE: 10pt">Megger test all wires to
ground at 1000Vdc <o:p></o:p></SPAN>
<LI style="VERTICAL-ALIGN: middle; mso-list: l6 level3 lfo2"
class=MsoNormal><SPAN style="FONT-SIZE: 10pt">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 style="VERTICAL-ALIGN: middle; mso-list: l6 level3 lfo2"
class=MsoNormal><SPAN style="FONT-SIZE: 10pt">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
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 135pt; VERTICAL-ALIGN: middle; mso-list: l6 level4 lfo2"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">·<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">If under 100 M
Ohms requires investigation and may require replacement of the
wire<o:p></o:p></SPAN></P>
<P
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 81pt; VERTICAL-ALIGN: middle; mso-list: l6 level2 lfo2"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">·<SPAN style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">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 style="VERTICAL-ALIGN: middle; mso-list: l6 level3 lfo2"
class=MsoNormal><SPAN style="FONT-SIZE: 10pt">Land the positive and
negative at the combiner box<o:p></o:p></SPAN>
<LI style="VERTICAL-ALIGN: middle; mso-list: l6 level3 lfo2"
class=MsoNormal><SPAN style="FONT-SIZE: 10pt">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 style="VERTICAL-ALIGN: middle; mso-list: l6 level3 lfo2"
class=MsoNormal><SPAN style="FONT-SIZE: 10pt">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 style="VERTICAL-ALIGN: middle; mso-list: l6 level3 lfo2"
class=MsoNormal><SPAN style="FONT-SIZE: 10pt">Open the CB/rooftop DC
disconnect and then open the fuse holder in CB#1<o:p></o:p></SPAN>
<LI style="VERTICAL-ALIGN: middle; mso-list: l6 level3 lfo2"
class=MsoNormal><SPAN style="FONT-SIZE: 10pt">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 style="VERTICAL-ALIGN: middle; mso-list: l6 level3 lfo2"
class=MsoNormal><SPAN style="FONT-SIZE: 10pt">Repeat steps for each CB
until all polarity and wire locations are identified and
landed<o:p></o:p></SPAN>
<LI style="VERTICAL-ALIGN: middle; mso-list: l6 level3 lfo2"
class=MsoNormal><SPAN style="FONT-SIZE: 10pt">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 style="MARGIN-LEFT: 1.5in; VERTICAL-ALIGN: middle" class=MsoNormal><SPAN
style="FONT-SIZE: 10pt"><o:p> </o:p></SPAN></P>
<P
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 0.75in; VERTICAL-ALIGN: middle; mso-list: l6 level1 lfo2"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">o<SPAN
style="FONT: 7pt 'Times New Roman'"> </SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">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
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 81pt; VERTICAL-ALIGN: middle; mso-list: l6 level2 lfo2"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">·<SPAN style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">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 style="VERTICAL-ALIGN: middle; mso-list: l6 level3 lfo2"
class=MsoNormal><SPAN style="FONT-SIZE: 10pt">Testing to be done at the
inverter<o:p></o:p></SPAN>
<LI style="VERTICAL-ALIGN: middle; mso-list: l6 level3 lfo2"
class=MsoNormal><SPAN style="FONT-SIZE: 10pt">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 style="VERTICAL-ALIGN: middle; mso-list: l6 level3 lfo2"
class=MsoNormal><SPAN style="FONT-SIZE: 10pt">Only the ground wires are
landed in both the Main Service Panel and the inverter <o:p></o:p></SPAN>
<LI style="VERTICAL-ALIGN: middle; mso-list: l6 level3 lfo2"
class=MsoNormal><SPAN style="FONT-SIZE: 10pt">The GFDI fuse is removed
from the inverter<o:p></o:p></SPAN>
<LI style="VERTICAL-ALIGN: middle; mso-list: l6 level3 lfo2"
class=MsoNormal><SPAN style="FONT-SIZE: 10pt">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
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 81pt; VERTICAL-ALIGN: middle; mso-list: l6 level2 lfo2"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">·<SPAN style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN
style="FONT-SIZE: 10pt">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 style="VERTICAL-ALIGN: middle; mso-list: l6 level3 lfo2"
class=MsoNormal><SPAN style="FONT-SIZE: 10pt">Megger test all wires to
ground at 1000Vdc <o:p></o:p></SPAN>
<LI style="VERTICAL-ALIGN: middle; mso-list: l6 level3 lfo2"
class=MsoNormal><SPAN style="FONT-SIZE: 10pt">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 style="VERTICAL-ALIGN: middle; mso-list: l6 level3 lfo2"
class=MsoNormal><SPAN style="FONT-SIZE: 10pt">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
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 135pt; VERTICAL-ALIGN: middle; mso-list: l6 level4 lfo2"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">·<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">If under 100 M
Ohms requires investigation and may require replacement of the
wire<o:p></o:p></SPAN></P>
<P
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 81pt; VERTICAL-ALIGN: middle; mso-list: l6 level2 lfo2"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">·<SPAN style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">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 style="VERTICAL-ALIGN: middle; mso-list: l6 level3 lfo2"
class=MsoNormal><SPAN style="FONT-SIZE: 10pt">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 style="VERTICAL-ALIGN: middle; mso-list: l6 level3 lfo2"
class=MsoNormal><SPAN style="FONT-SIZE: 10pt">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 style="VERTICAL-ALIGN: middle; mso-list: l6 level3 lfo2"
class=MsoNormal><SPAN style="FONT-SIZE: 10pt">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
style="LINE-HEIGHT: normal; TEXT-INDENT: -13.5pt; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 49.5pt; MARGIN-RIGHT: 0in; mso-list: l6 level1 lfo2; mso-margin-top-alt: 0in"
class=MsoListParagraph><![if !supportLists]><SPAN
style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">o<SPAN style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">Connection
testing<o:p></o:p></SPAN></P>
<P
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 81pt; VERTICAL-ALIGN: middle; mso-list: l4 level2 lfo3"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">·<SPAN style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">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 style="VERTICAL-ALIGN: middle; mso-list: l4 level3 lfo3"
class=MsoNormal><SPAN style="FONT-SIZE: 10pt">Testing to be done at all
locations<o:p></o:p></SPAN>
<LI style="VERTICAL-ALIGN: middle; mso-list: l4 level3 lfo3"
class=MsoNormal><SPAN style="FONT-SIZE: 10pt">All wires are
landed<o:p></o:p></SPAN> </LI></UL></UL></UL>
<P
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 81pt; VERTICAL-ALIGN: middle; mso-list: l4 level2 lfo3"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">·<SPAN style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN
style="FONT-SIZE: 10pt">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 style="VERTICAL-ALIGN: middle; mso-list: l4 level3 lfo3"
class=MsoNormal><SPAN style="FONT-SIZE: 10pt">Test all wires for proper
torque settings - refer to manufacturer installation
manual<o:p></o:p></SPAN>
<LI style="VERTICAL-ALIGN: middle; mso-list: l4 level3 lfo3"
class=MsoNormal><SPAN style="FONT-SIZE: 10pt">Physically tug on all wires
for a visual inspection of loose connections
<o:p></o:p></SPAN></LI></UL></UL></UL>
<P style="MARGIN-LEFT: 1.5in" class=MsoNormal><SPAN style="FONT-SIZE: 10pt">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
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 81pt; VERTICAL-ALIGN: middle; mso-list: l0 level1 lfo4"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">·<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">After the test is
complete<o:p></o:p></SPAN></P>
<P
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 1.5in; VERTICAL-ALIGN: middle; mso-list: l0 level2 lfo4"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Wingdings; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">§<SPAN style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">Close all fuse
holders at each combiner box<o:p></o:p></SPAN></P>
<P
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 1.5in; VERTICAL-ALIGN: middle; mso-list: l0 level2 lfo4"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Wingdings; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">§<SPAN style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">Close all DC
disconnects associated with each combiner box<o:p></o:p></SPAN></P>
<P style="MARGIN-LEFT: 1.5in" class=MsoNormal><SPAN
style="FONT-SIZE: 10pt"> <o:p></o:p></SPAN></P>
<P style="MARGIN-LEFT: 9pt; VERTICAL-ALIGN: middle" class=MsoNormal><B><SPAN
style="FONT-SIZE: 10pt">System Commissioning<o:p></o:p></SPAN></B></P>
<P
style="TEXT-INDENT: -0.5in; MARGIN-LEFT: 1in; VERTICAL-ALIGN: middle; mso-list: l5 level2 lfo5"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">o<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">You are now ready
to Commission the inverter<o:p></o:p></SPAN></P>
<P
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 0.75in; VERTICAL-ALIGN: middle; mso-list: l5 level2 lfo5"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">o<SPAN
style="FONT: 7pt 'Times New Roman'"> </SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">Follow inverter
manufacturer commissioning procedures<o:p></o:p></SPAN></P>
<P
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 0.75in; VERTICAL-ALIGN: middle; mso-list: l5 level2 lfo5"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">o<SPAN
style="FONT: 7pt 'Times New Roman'"> </SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">Complete the
balance of the combiner box commissioning worksheet, the initial start up and
inverter commissioning worksheet<o:p></o:p></SPAN></P>
<P style="MARGIN-LEFT: 0.75in" class=MsoNormal><SPAN
style="FONT-SIZE: 10pt"><o:p> </o:p></SPAN></P>
<P style="MARGIN-LEFT: 0.75in" class=MsoNormal><SPAN
style="FONT-SIZE: 10pt"><o:p> </o:p></SPAN></P>
<P
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 81pt; VERTICAL-ALIGN: middle; mso-list: l3 level1 lfo6"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">·<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">Imp Testing of
source circuits<o:p></o:p></SPAN></P>
<P
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 1.5in; VERTICAL-ALIGN: middle; mso-list: l3 level2 lfo6"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Wingdings; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">§<SPAN style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">Test
conditions:<o:p></o:p></SPAN></P>
<P
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 135pt; VERTICAL-ALIGN: middle; mso-list: l3 level3 lfo6"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">·<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">Testing to be
conducted at combiner boxes<o:p></o:p></SPAN></P>
<P
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 135pt; VERTICAL-ALIGN: middle; mso-list: l3 level3 lfo6"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">·<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">System is up and
running <o:p></o:p></SPAN></P>
<P
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 1.5in; VERTICAL-ALIGN: middle; mso-list: l3 level2 lfo6"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Wingdings; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">§<SPAN style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN
style="FONT-SIZE: 10pt">Test<o:p></o:p></SPAN></P>
<P
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 135pt; VERTICAL-ALIGN: middle; mso-list: l3 level3 lfo6"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">·<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">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
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 135pt; VERTICAL-ALIGN: middle; mso-list: l3 level3 lfo6"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">·<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">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
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 135pt; VERTICAL-ALIGN: middle; mso-list: l3 level3 lfo6"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">·<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">Repeat for all
strings in the combiner box <o:p></o:p></SPAN></P>
<P
style="LINE-HEIGHT: normal; TEXT-INDENT: -0.25in; MARGIN-BOTTOM: 0pt; MARGIN-LEFT: 1in; MARGIN-RIGHT: 0in; mso-list: l3 level2 lfo6; mso-margin-top-alt: 0in"
class=MsoListParagraph><![if !supportLists]><SPAN
style="FONT-FAMILY: Wingdings; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">§<SPAN style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">Imp Testing of
output circuits<o:p></o:p></SPAN></P>
<P
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 1.5in; VERTICAL-ALIGN: middle; mso-list: l1 level2 lfo7"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Wingdings; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">§<SPAN style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">Test
conditions:<o:p></o:p></SPAN></P>
<P
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 135pt; VERTICAL-ALIGN: middle; mso-list: l1 level3 lfo7"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">·<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">Testing to be
conducted at the inverter<o:p></o:p></SPAN></P>
<P
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 135pt; VERTICAL-ALIGN: middle; mso-list: l1 level3 lfo7"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">·<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">System is up and
running<o:p></o:p></SPAN></P>
<P
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 1.5in; VERTICAL-ALIGN: middle; mso-list: l1 level2 lfo7"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Wingdings; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">§<SPAN style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN
style="FONT-SIZE: 10pt">Test<o:p></o:p></SPAN></P>
<P
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 135pt; VERTICAL-ALIGN: middle; mso-list: l1 level3 lfo7"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">·<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">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
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 135pt; VERTICAL-ALIGN: middle; mso-list: l1 level3 lfo7"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">·<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">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
style="TEXT-INDENT: -0.25in; MARGIN-LEFT: 135pt; VERTICAL-ALIGN: middle; mso-list: l1 level3 lfo7"
class=MsoNormal><![if !supportLists]><SPAN
style="FONT-FAMILY: Symbol; FONT-SIZE: 10pt"><SPAN
style="mso-list: Ignore">·<SPAN
style="FONT: 7pt 'Times New Roman'">
</SPAN></SPAN></SPAN><![endif]><SPAN style="FONT-SIZE: 10pt">Repeat for all
output circuits from each combiner box<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="COLOR: #595959; FONT-SIZE: 9pt"> Chief
Technology Officer<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #595959; FONT-SIZE: 9pt"> Resources
Group <o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #595959; FONT-SIZE: 9pt"> C:
603-732-2411<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #595959; FONT-SIZE: 9pt"> 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
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<P class=MsoNormal><B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt">From:</SPAN></B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt">
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-FAMILY: 'Courier New'; FONT-SIZE: 10pt">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-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">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-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><< 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-FAMILY: 'Courier New'; FONT-SIZE: 10pt">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-FAMILY: 'Courier New'; FONT-SIZE: 10pt">on
Amazon (Electronic Specialties 550 Insulation Tester for $162). Both
work<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">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-FAMILY: 'Courier New'; FONT-SIZE: 10pt">wet
resistance testing" (FWRT). However, the cheap tester works great
for<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">finding faults in conductors
and severe faults in modules. <o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">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-FAMILY: 'Courier New'; FONT-SIZE: 10pt">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-FAMILY: 'Courier New'; FONT-SIZE: 10pt">procedures. The other key to
actually use the tester. Several people own<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">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-FAMILY: 'Courier New'; FONT-SIZE: 10pt">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-FAMILY: 'Courier New'; FONT-SIZE: 10pt">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-FAMILY: 'Courier New'; FONT-SIZE: 10pt">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-FAMILY: 'Courier New'; FONT-SIZE: 10pt">circuit in the
inverter.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">Bill.
>><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt"><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>
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