On 28/09/2020 10:39, Chris Holmes wrote:

I think the OPs questions has been pretty well answered. Someone
suggested that at least in electrics, you could be confident that if
you told a customer certain safety features were needed, at least if
he went to another electrician they would just confirm this. I have

Perhaps I should have said another "reputable" electrician. Yup there
are sure to be chancers available that will do what you ask even if not
sensible or legal, and take your money.

to say, having seen some "Electricans' work and also having seen them
discuss stuff in other threads, this is far from the case. I
recently saw an advert for a local electrician who was showing off a
recent "Fuse Box" (his words) install. I can't remember precisely,
but if there was an RCD / RCBO in it, there was only one (so a
maximum one for the whole install).

See above, although keep in mind you don't know if the CU was actually a
house CU or say one in a garage, where one RCD may be acceptable.

I also saw a discussion where
some thought it was ok to leave a wylex rewirable fuse CU in situ and
add a whole house RCD in front of it, and others who said it had to
come out and a 17th / 18th edition CU go in (can't remember how long
ago this was). Strictly, I suppose if the house was old enough, it
wasn't a requirement to fit an RCD at all.

Unless doing other work like adding a socket. Now you could do that with
a RCD socket, but if attaching a normal one to the circuit then it would
need a RCD now.


--
Cheers,

John.

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