Hi, I don't do a lot of domestic stuff but I'm going to do a board change for a friend. They want a new board but in and they currently have an old re-wireable 4 way board which has been massively overloaded and resulted in one of the fuses exploding into pieces.QUOTE]
If the board is so overloaded that it's causing this to happen, changing it for another isn't going to solve this problem unfortunstely........
It will, the reason for the overload was because some DIYer before he bought the house built an extension, they didn't have enough ways in the board so they took a bit of cable into a junction box and used it to feed the extra room, a shed in the garden, the garage and a shower in the bedroom. Hence the state of the fuse when someone decided to use it all at once.