dc rated switches [RE-wrenches]

[Eric Smiley]

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I recently visited a grid-tie PV system where a siemens Heavy Duty Switch 
(Type VBII) was used for the array disconnect. In a negative grounded 
system do these switches need to have the positive conductor pass through 
two (or more) poles of the switch in DC applications? I can't find 
anything on the Seimens site to indicate yea or nay.


Eric Smiley,  MASc 
Project Leader - Technology Centre
British Columbia Institute of Technology 

NE25 - 3700 Willingdon Avenue
Burnaby, British Columbia
Canada V5G 3H2

phone: 604.432.8657    fax: 604.436.0286
esmiley at bcit.ca

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