well what to they do in a power cut ? If it is really that important expect battery back up or redundant supplies /back-up gensets etc.

Note that in another post we are discussing the likelihood of rota power cuts this winter. If this happens, then for everyone involved the electricity supply will be turned off (in blocks) for pre-announced multiples of 3 hours at a time, depending on the shortage of electricity. This could be affected by the weather, the time of day and the demand for electricity. At the lowest level of emergency, you could expect to be without electricity for just three slots (9 hours) spread over a week. However, if there is a severe shortage of electricity, all users may be without supply for several slots each week.

Edit flick to the back of the emergancy code to see the degrees from 1-18 of severity in all its black and white rectangular glory.

level 1 is modest

by level 5 its is off a lot of the time

and the upper levels are off more than on - this is level 11

Mike.

Actually classified. But a power cut is different from the de-energization of a single circuit or board. 

indeed but prisons (unlike very large hospiltals) do not qualify for protected supplies in rota cuts, and so the situation needs to be handled locally.

Mike.

*silence* not relevant 

I was a Civil Servant once and worked in a Government owned establishment. The establishment was exempt from many Health & Safety rules and regulations due to its status. The centre manager used this position to create excuses not to do some things correctly.

Z.

"Depending on how that test is carried out, it can be dangerous without carrying out other tests first."

My R.C.D. tester has lights that show a go or no go safety situation. It would tell me if the C.P.C. was not present.

Z.

Yes, (643.10) and the use of the test button does not involve any C.P.Cs properly connected or not. Testing the R.C.Ds is a step towards greater safety.

Z.

https://electricianforum.co.uk/threads/rcd-test-problem.9252/

Z.

Better than nothing?

TrigPoint said:

I don't really want to argue the toss but the original post still stands. What is even the point of testing the RCD when the whole system is in such an old and shabby state. It's not being tested correctly so the results really don't mean anything. (And I don't want to sign them off)

Chris Pearson said:

Yes, but your employer will be vicariously liable.

But that doesn't remove all liability (criminal and personal injury, at least contributing to one's own personal injury) from the employee.

This is because knowing something is dangerous and doing nothing about it is a breach of legislation (Section 7 of the HS@W etc Act). There is also such a thing as contributory negligence on the civil (claims) side.