I father's house is about 35 years old and the lighting is two core and
in perfectly good condition. I would like to upgrade the lighting in
the bathroom using halogen lights, however, I believe that these need
earthing, as the bathroom is the furthest point from the consumer unit
is it possible run the earth from a copper probe sunk in the garden or
will I need to rewire?
Good practice and part P of the building regs would require you to to
upgrade the main and supplementary bonding upto the current regulations
before starting such a project.
Supplementary bonding is here
and main bonding is here
I cannot bloody find the link
so look at
Also look at
I do not know of many downlights that require an earth, most are double
insulated, and those that do require an earth are not suitable for many
bathroom locations. Look at the SELV requirements in the 139 download.
If you are suggesting that you are going to sink a copper stake into the
garden to make an earth for the lights then forget it. The words wrong,
dangerous, bodge, and death spring to mind.
The house must be older than 35 years old as an earth for the lighting was
required from 1966 onwards.
My parents house, 1955, does have earths on lighting circuits
(and fortunately PVC wiring which was only just coming in then),
so there's quite a range over which houses may or may not have
earthed lighting circuits.
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