Thanks for that, Adam. A new CU has been fitted at the property since the
purchase, with a 30mA RCD - it was when this was fitted that the electrician
checked the rest of the installation and discovered that there was no cpc to
the lighting circuit. All the light fittings are class II (but I'll run a
cpc to them anyway) - as I said in my opening post, the only problem is with
the switches. If I replace all the metal switch boxes with plastic ones, and
put a warning notice on the CU to that effect, would the installation then
be considered to be up to scratch?
It would be safer if you did change the back boxes but it is not that
essential. I wonder if you can still get the plastic screws (I know BOLTS)
that they used to use some years ago and keep the metal back boxes?
Yes, I have only ever heard them called screws.
Note for Adam: The plastic screw is a good idea - any idea who might stock
Machine screws, but I have known then to be called boltd.
No idea where to get the plastic ones from. I will have a look over the
How do you intend to swap the backbox without damaging the plaster?
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