Converting that chandelier to use a (Black) Maestro Plug-In Ceiling Rose will cost you a few pounds nowI always use these for chain supported lights.
Also come in other colours.
https://www.tlc-direct.co.uk/Products/LDMC11E.html
Two of the initial photos show Brown, Blue and Green/Yellow insulated wires, which are virtually certain to be plastic insulated.The standard ceiling rose should be fixed so it can take 5 kg, I would also use the slide in ceiling rose View attachment 237650 View attachment 237651 it makes it far easier than holding up that weight while connecting it, your cable looks like rubber insulated, likely pre 1966 in which case likely needs a rewire before you fit the chandelier, as likely there is no earth in your wiring and the chandelier you show will need earthing.
The standard ceiling rose should be fixed so it can take 5 kg, I would also use the slide in ceiling rose View attachment 237650 View attachment 237651 it makes it far easier than holding up that weight while connecting it, your cable looks like rubber insulated, likely pre 1966 in which case likely needs a rewire before you fit the chandelier, as likely there is no earth in your wiring and the chandelier you show will need earthing.
So likely you will need a class II lamp until you are ready to rewire.
Eric was referring to the cable coming out of the wood patress feeding the existing rose.Two of the initial photos show Brown, Blue and Green/Yellow insulated wires, which are virtually certain to be plastic insulated.
Hopefully, the Earth wire IS connected properly!
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