This shows the meter box on the outside wall of my house. Mains cables comming up on the left and into the large black box. They then continue up to the white meter. Two wires coming back out of meter into small black box on right. The two grey cables out the top right of this box go to the right and up to the still working fusebox. Grey cable on right out of the bottom of box is the neutral and still connected cable going to the no longer needed fusebox.