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change over switch

grousedogtom · 2010-06-29 22:10:37

Hi ,just a quick question, iam fitting a change over switch on a 3 phase supply and have tried a few wholesalers for a 4 pole change over switch so i can isolate all 3 phases and the neutral but all only seem to have 3 pole co switches only, my question is do i need to break the neutral through the co switch , i am…

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29-06-2010 11:10pm

#1

grousedogtom

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Hi ,just a quick question, iam fitting a change over switch on a 3 phase supply and have tried a few wholesalers for a 4 pole change over switch so i can isolate all 3 phases and the neutral but all only seem to have 3 pole co switches only, my question is do i need to break the neutral through the co switch , i am thinking safer to do so , Thanks in advance

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#2 29-06-2010 11:58pm
2011

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I would not think so with a neutralized system as you will not switch the earth and it is connected to gbe neutral anyway.

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