OP
anna anna
ok, so it is 10 m lengh from the consumer unit plus an extra 1.5 m from the oven to the socket (in order to be able to move the cooker). the cable will be running under the floor and partially in the wall. So up from the socket (in a wall) then uder the floor boards and then to the consumer unit. thanksHi Anna, to work out if 10mm might be required it would be good to know the detail of the cable run - its length and its installation method. In the right conditions the 6mm will be ok, but that's what your Electrician can best assess on site. I can't imagine needing 16mm