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<div class=Section1>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'>You might give the guys at NorthWest Data
Comm, Reno, NV a call.</span></font></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt;color:black'> </span></font></p>
<div>
<p><font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'>Peter T. Parrish, </span></font></p>
</div>
<div>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabindex=-1>
</span></font></div>
<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>holtek@sbcglobal.net<br>
<b><span style='font-weight:bold'>Sent:</span></b> Friday, August 22, 2008 8:41
AM<br>
<b><span style='font-weight:bold'>To:</span></b> RE-wrenches<br>
<b><span style='font-weight:bold'>Subject:</span></b> [RE-wrenches] Braided
grounding wire</span></font></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
<div>
<p class=MsoNormal><font size=3 face="Century Schoolbook"><span
style='font-size:12.0pt;font-family:"Century Schoolbook"'>Anybody know a source
for braided grounding wire? Internet search fruitless......</span></font></p>
</div>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
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<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Holt E. Kelly<br>
Holtek Fireplace & Solar Products<br>
500 Jewell Dr.<br>
Waco,Tx. 76712<br>
254-751-9111<br>
254-228-9621 (cell)<br>
<a href="mailto:holtek@sbcglobal.net">holtek@sbcglobal.net</a></span></font></p>
</div>
<blockquote style='border:none;border-left:solid black 1.0pt;padding:0in 0in 0in 3.0pt;
margin-left:2.7pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'>
<div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>----- Original Message ----- </span></font></p>
</div>
<div style='font-color:black'>
<p class=MsoNormal style='background:#E4E4E4'><b><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial;font-weight:bold'>From:</span></font></b><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> <a
href="mailto:info@es-ee.com" title="info@es-ee.com">Kurt Albershardt</a> </span></font></p>
</div>
<div>
<p class=MsoNormal><b><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial;font-weight:bold'>To:</span></font></b><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'> <a
href="mailto:re-wrenches@lists.re-wrenches.org"
title="re-wrenches@lists.re-wrenches.org">RE-wrenches</a> </span></font></p>
</div>
<div>
<p class=MsoNormal><b><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial;font-weight:bold'>Sent:</span></font></b><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'> Friday, August 22,
2008 12:57 AM</span></font></p>
</div>
<div>
<p class=MsoNormal><b><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial;font-weight:bold'>Subject:</span></font></b><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'> Re: [RE-wrenches]
motor starting issues (was: offgrid systemquestion)</span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
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<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>--On Tuesday, August 19,
2008 7:57 AM -0700 Peter Parrish <<a
href="mailto:peter.parrish@calsolareng.com">peter.parrish@calsolareng.com</a>>
wrote:<br>
><br>
> Any motor will need both a voltage and current to operate properly, and
they tend to draw more and more current as the source (inverter) voltage drops.<br>
<br>
<br>
Back to basic physics:<br>
<br>
Depending on design, electric motors can be constant power or constant torque
(or some combination of two) devices.<br>
<br>
Three phase AC motors are generally simpler in design and better behaved than
either either single phase AC motors or DC motors. Permanent magnet
synchronous 3Ø AC motors (available now) closely approach the theoretical
limits of electromechanical motor systems in general.<br>
<br>
Modern power electronics and control systems give us essentially perfect
control of voltage, current, and frequency in AC systems.<br>
<br>
Intelligently combining the above allows us to design efficient
electromechanical systems which match nearly any complex supply
impedance. These systems also happen to live longer, fail less often, and
reduce both battery bank and inverter requirements.<br>
<br>
The market (arguably free on so many levels, and obviously not on so many
others) can address this using current technology. System sizing
math not has changed fundamentally in several decades but we are getting closer
to those fundamental limits.<br>
<br>
Industrial systems are a bit ahead of the consumer market in some areas but
behind in others. As one very basic example, Turbocor's maglev compressor
has created a few waves in the commercial and light industrial sector but I
fully expect some fascinating trickle-down benefits over next few years <<a
href="http://www.turbocor.com/products_technology/">http://www.turbocor.com/products_technology/</a>><br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
.<br>
<br>
<br>
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