I'm trying to get 3 wires into an electrical double socket,
6mm, 4mm and 4mm
and making a bit of a mess with exposed copper showing.

Is there a technique to doing this?
maybe tape the wires together before inserting?
or remove a few strands of copper?

They feed 5 double sockets in one room, radial.

Is there a double socket with bigger connection terminals?

Or must I gouge the walls and rewire them somehow?

I dont want to have hidden junction boxes under the floorboards or anywhere in my house

[george]