Odd. There is working live and working LIVE.The place I work also tells us we are NOT to work live.
Dunno how the hell we're supposed to complete EICRs.
Originally I assumed that "working live" was the sort of high-risk activity such as making a change/repair to an energised system, you know the really squeaky-pants time and not something you would ever do unless there really was absolutely no alternative.
But of course any energised testing is also "working live" and then it gets more complicated as typically EICR and EIC both requier measurements such as Ze and Zs to be done, along with RCD trip-testing. Just how much exposure is too much to be safe?
- Do you base it on where you test (i.e. the CAT-II final point versus CAT-III DB location idea)?
- Do you base it on available arc-flash energy?
- Do you base it on whether it is done via probes or a 13A socket?
- If so do you leave light circuits untested, so the owner/occupier is the first one to encounter a problem?