I work on a caravan site as the maintenance man. I need to wire in 5 more caravans. Need to put in another 100 amp fuse box. Not an issue installing etc, but my problem is there is a 100 amp breaker coming out of the generator at the start of the feed. A new feed is not an option. I need to make it fused at 200 amp at the start of the feed. Can not find standard 200 amp fuses so any help would be greatly appreciated. (Cable is 30mm armoured over 20m)