C-H,
Seen this God knows how many times,
especially with replacing Pillar Box(Mains) fuses(HRC),with houses protected by RWF sub-
circuits, if it blows again, just put a bigger fuse wire in the holder, most home-owners over here, do not care about Co-ordination of protective devices, hence, the Power board, turning up when the whole house has gone dead. [Linked Image]