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  1. V

    2391 practical

    Hi to all I am sitting my 2391 practical tomorrow I need some advice please If I am carrying out the live test first (periodic inspection) and I want to do the Ze first is it ok to isolate the isolator on the 3hase db then remove the cover remove the cpc and then carry out the test or do I...
  2. V

    2391 practical

    Hi to all I am sitting my 2391 practical tomorrow I need some advice please If I am carrying out the live test first (periodic inspection) and I want to do the Ze first is it ok to isolate the isolator on the 3hase db then remove the cover remove the cpc and then carry out the test or do I...
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