Ian
So you have really tested nothing, other than you no the RCD trips at 28mA.
Would suggest you have not identified the problem and a bit more testing is required rather than "we will try this then try that" and hope the fault disappears?
Rewiring a 2 bed end terrace house does not come into the certification scheme, providing it is not part of other works for which a building warrant was obtained and you therefor have no need to contact building control.
You can carry out the works yourself, however this is not recommended...
What is the nature of the work you are proposing to carry out?
The certification process comes into being mainly where a building warrant is required.
Do a search on this forum
Please don't misinterpret this question: I am not having a go...
I am not
Locking off the MCB would be a safe isolation proceedure, but does not eliminate a borrowed neutral situation.
What would be safe isolation?
Appears I am not going to get an education today.
My postings have been made in a light hearted mode with some knowledge.
The picture show the cutters against a piece of 16mm and my assumption being that this is how they were damaged. This would have been the load current of the circuit...
The fan installed will require to provide a number of air changes to meet with the building regulations. Im afraid fans are not tailor made for individual bathroom sizes and will run at the same speed all the time.
Is this wind up time?
RF What you on tonight?
"Why are there 2 RCDs in series? That is not good circuit design. "
OSG Fig 3a ??????????????????????????????
Must admit Mark did not detail what the set up was
Mad Dr
Its sounds like you want to partially flush a surface mounting back box. Rarely seen it done, but there are no reasons why not.
You do not need to earth the plastic back box and if metal boxes are used, then, providing one lug is fixed, you do not need to earth it either