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At 05:14 PM 1/9/2010, you wrote:<br>

<blockquote type=cite class=cite cite="">I recently came across a revised

technical bulletin from square D (

<a href="http://ecatalog.squared.com/pubs/Electrical%20Distribution/Safety%20Switches/Heavy%20Duty/3110DB0401.pdf">

http://ecatalog.squared.com/pubs/Electrical%20Distribution/Safety%20Switches/Heavy%20Duty/3110DB0401.pdf</a>

 )......</blockquote>

<x-sigsep><p></x-sigsep>

We would need to use method "D" with the three pole. 

Method "C" would break the negative, leaving it ungrounded.

<br><br>

<br>

<font color="#0000FF">Drake Chamberlin<br>

Athens Electric<br>

OH License 44810<br>

CO License 3773<br>

NABCEP </font><font size=1 color="#0000FF">TM 

</font><font color="#0000FF">Certified PV Installer <br>

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