I have two pendant-style lights above my kitchen countertop, which are operated from a single light-switch, which I would like to replace with fancier fittings.
I live in the UK in a house built in 1960, and as such the lighting circuit is not earthed. A friend of my father's, who is a very experienced electrician, advised me that this is no problem, just buy double-insulated light fittings as we renovate each room.
My new, fancier pendant lights are therefore double insulated. When I have gone to remove the existing pendants, however, I discovered that they are seemingly earthed (they were installed when we had our kitchen renovated last summer).
Furthermore, these fancier lights come with their own ceiling fittings, and being double-insulated have a terminal box for live and neutral incorporated into these fittings, meaning that I cannot simply wire them into those currently in-place.
In the attached photo of my understanding is that I would simply wire the brown and blue cables from the three-core into the live and neutral points respectively on the new fittings. I do not know what I should do with the earth wire.
If it's a matter of simply replicating the existing wiring configuration, then my understanding would be that for each of the three terminal blocks, I should disconnect the wires from the existing fitting, re-connect them to a 'choc block' terminal block, which should then be inserted into the ceiling cavity (after being wrapped in insulated tape?), wiring-in a connection to the L/N terminals in the double-insulated fittings where appropriate. I still do not know what to do with the earth wires.
My questions are:
Are my understandings of how to wire my double-insulated fittings to pendants one and two correct?
What is the correct way of dealing with an earth wire when connecting double-insulated light fittings?
It's quite likely that I will try to find an electrician to do this regardless of whether my present understanding is correct or not; definitely so if the solution is not as straight-forward as what I've described above.
However, I'd still really appreciate any answers, firstly to learn, and secondly, in particular in regards to question 2, so that I can be confident that an electrician has done the job properly. It's my experience that electricians in my area of the UK, especially younger ones, are somewhat mystified by double-insulated fittings, and so I'm concerned about getting a bodge-up.