Double insulated wiring for outside porch light

double insulated wiring?
I have bought an outside porch light here in Spain (It is made in Germany). It says on the instructions the supply wiring has to be double insulated. The pack contains two silicone sleeves - when fitted over the live and neutral wire are these the double insulation - or is there something else needed?

and what do I do with the not needed earth wire?

 

I think you have mis-read the instructions. The light is probably double insulated with a little symbol of a box within a box, the sleeves will be to give a bit of extra protection from the heat of the lamp.

 

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