I heard somewhere that when wiring a consumer unit, the highest amp breaker should go next to the main switch and lowest amp farther down the board. Is this correct? I have an old Wylex board with rewireable fuses fitted, the fuses are fitted in no particular order and the highest rated fuse is 30a. I got some replacement mcb's and wondered if I should just replace in the same slot or move all the fuses so they are in order. Thanks in advance for any advice [/list]