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<font size=3>Darryl:<br><br>

You make an important and valid point.  This is why I am interested

in Aurora Inverters.  They use ungrounded PV arrays.  Here is a

link to the manual. 

<a href="http://www.power-one.com/resources/products/appnote/AlternativeEnergy/manual4.2us.pdf" eudora="autourl">http://www.power-one.com/resources/products/appnote/AlternativeEnergy/manual4.2us.pdf</a> 

Check out section 2.4.2.  Here is the manufacturer's web site: 

<a href="http://www.power-one.com/renewable-energy/grid-tie-solar-inverters.php" eudora="autourl">http://www.power-one.com/renewable-energy/grid-tie-solar-inverters.php<br><br>

</a>Alternatively, we need the device I invented, only to find someone

beat me to it: 

<a href="http://www.google.com/patents?id=wXHIAAAAEBAJ&pg=PA2&dq=solar+ground+fault+protection&source=gbs_selected_pages&cad=2#v=onepage&q=&f=false" eudora="autourl">http://www.google.com/patents?id=wXHIAAAAEBAJ&pg=PA2&dq=solar+ground+fault+protection&source=gbs_selected_pages&cad=2#v=onepage&q=&f=false</a><br><br>

William Miller<br><br>

<br>

At 06:05 PM 12/5/2009, you wrote:<br>

<blockquote type=cite class=cite cite>Remember target had two fires. one

caused by the conduit cutting insulation and the other by the ground

current passing through small module ground leads.  Had the grounded

conductor not been grounded this other fire would not have

happened.  We need to move to ungrounded systems.  <br>

Darryl    <br>

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