The service cable, (micc) needs reworking, fuse drawn by us at origin. Steel box with pyro terminated into it, no bango reqd, brass gland, 16mmsq earth from box into earth bar. Sit 100 amp existing series 7 on top of new box. 25mmsq brown and blue from cut out and meter from meter guys. Full test on con's wiring, and remedial.
You can tell all this from a photo? How can you tell what fuse is inside the 100A rated fuse carrier?