Ok how to upset everyone.
A client wants a COC on an installation that cannot be switched off. Discuss....
I said to the client it can't be tested effectively. Yes, you can do earth test (fly lead method) when live. Insulation resistance... No chance. Polarity, yes. Make and break check, nope. Earth leakage (I don't there are any). Voltage off load, not possible.
I accept there are things that cannot be turned off. What do you guys think....
I do a lot of shop work in malls and, no the mall will not let you shut down the entire mall so you can do a no load voltage test.
This job isn't a shopping centre and i understand it can't be turned off. The consequences would be quite dire. What can you do in these situations.
Just curious. I know most will say "won't touch with a barge pole"