Picked one of these up from Toolstation . . Looks like all the others - badged CED Instructions do not mention earth and there is no connection, can I run three core pvc flex out through the wall to it and use the earth as the switched live (sleeved of course) or do I have to use four core and cut back the earth - there is no room in the unit for a connection block on the end of the earth cable if I use four core.. It will switch seven 2w LED downlighters in shower fittings in the soffit. Edit - there will be about 2" of flex betwween the fitting and the entry point into the garage wall and a terminal box on the inside of the wall.