La Poste
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Howdy folks.
I am working my way through loads of past test papers at the moment in preparation for my July exam.
I have been asked to insulation test a ring that has been properly isolated.
The way I have always insulation tested rings is to remove line, neutral and CPC conductors from the board, join L1L2, join N1N2 and join CPC1CPC2 then test at 500v between each (with all equipment removed)
I like this method.
I notice in GN3 that they like you to leave the conductors in the board and test between L and N and E (line at the outgoing side of the isolated MCB, Neutral simply connect a crocodile clip to the neutral bar and CPC simply connect a crocodile clip to the CPC/ Earth bar.
Do you think my method of removing all conductors from the board will lose me marks and do you think it is a waste of time removing these conductors?
Tanks a million.
I am working my way through loads of past test papers at the moment in preparation for my July exam.
I have been asked to insulation test a ring that has been properly isolated.
The way I have always insulation tested rings is to remove line, neutral and CPC conductors from the board, join L1L2, join N1N2 and join CPC1CPC2 then test at 500v between each (with all equipment removed)
I like this method.
I notice in GN3 that they like you to leave the conductors in the board and test between L and N and E (line at the outgoing side of the isolated MCB, Neutral simply connect a crocodile clip to the neutral bar and CPC simply connect a crocodile clip to the CPC/ Earth bar.
Do you think my method of removing all conductors from the board will lose me marks and do you think it is a waste of time removing these conductors?
Tanks a million.
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