Under UK law there is a precept of 'As low as reasonably practicable' where 'reasonable' is decided by those responsible for the work initially, and by a judge if it goes wrong. Regardless of what the rules say, make sure you are completely satisfied that you or your workers are safe, and that you could defend any decisions you make in court under hostile cross-examination.
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If we learn from our mistakes I'm getting a great education!
bayoubare ......"-- you do not ever recommend test a cable ? Even if the entire switchgear is de-enegized a cable must be moved to be tested. Using your logic that may cause a fault when it is re-energized so it should not be done?"
you are correct, a cable moved/tested whilst de-energised might well develop a fault when re-energised but the big (and probably life saving) difference is that when I re-energise a cable I can be in a different room whereas to move an energised cable as you are suggesting I'd have to be in the same compartment
