NOT KNOWN DETAILS ABOUT OVAL CONDUITS

Is definitely the oven major & industrial, just questioning why you need 6mm2 cable, most domestic ovens might be wired in 2.5mm2 or 4mm2.Also for back boxes, I have a tendency to mark the box on the wall, use some insulation tape and mark the proper depth of your again box on the drill bit, drill a load of holes around the box to the right depth,