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Insulation Resistance Testing

Chivers
Hi,


I work as a Maintenance Electrician and part of my Testing role is to complete Insulation resistance testing on Supply cables between Metal cabinets on Highways Equipment - Normally Armoured or similar.


I have had 2391 since 2006 and at no point in my Testing Course did i ever come across something a colleague of mine seems to be insisting we all do. That is "Conductor to Ground Testing". I have in the past completed Phase to Neutral, Neutral to Earth and Earth to Phase and recorded these on my test certificates (All supplies are single phase). As far as I know there is nowhere to record such tests on any software or sheets I have seen. Am I missing something fairly obvious or does this seem pointless to others too? 


Regards Chivs
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    This might only be case of differing terminology.

    The presently performed tests between the phase or neutral conductors and earth might be what is required ?

    For an already installed SWA  cable, it is a reasonable assumption that "earth" means the armouring and that this is already connected to the general mass of earth, hopefully deliberately, but at least fortuitously if the intended connection is missing or defective.

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  • 0
    This might only be case of differing terminology.

    The presently performed tests between the phase or neutral conductors and earth might be what is required ?

    For an already installed SWA  cable, it is a reasonable assumption that "earth" means the armouring and that this is already connected to the general mass of earth, hopefully deliberately, but at least fortuitously if the intended connection is missing or defective.

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