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Shock Likelihood at Switch.

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Mornin' All,


I have just inspected and tested a renovated  old flat's wiring. The original lighting wiring in places has no circuit protective conductor. The owner has installed metal plate light switches to two positions with wooden back boxes. At these two positions there is no circuit protective conductor. The flat has a new R.C.B.O. consumer unit and all other wiring is good.


I have recommended that the switches have a C.P.C. installed (difficult and disruptive) or be changed to all insulated types.


Just what is the shock risk at these two switch positions? What is the likelihood of the metal plates becoming live due to a fault? Has anyone every seen a metal plate switch break down so that the plates becomes live?


Thanks,


Z.

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    I would always code an un-earthed light fitting or metallic light switch as a Code 2 which would make an EICR "unsatisfactory ". That is my engineering judgement and also risk averse as a frequent visitor to the witness box over many years as a witness I have no desire to go there as a defendant. I only mak e observations and recommendations it is very much up to the client to act on these as I cannot compel them to do anything.


    So come on Zoom how did you code this non-compliance and what was the outcome of the EICR?
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  • 0
    I would always code an un-earthed light fitting or metallic light switch as a Code 2 which would make an EICR "unsatisfactory ". That is my engineering judgement and also risk averse as a frequent visitor to the witness box over many years as a witness I have no desire to go there as a defendant. I only mak e observations and recommendations it is very much up to the client to act on these as I cannot compel them to do anything.


    So come on Zoom how did you code this non-compliance and what was the outcome of the EICR?
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