Diazed fuse blows too often? Rip out that darn gauge ring that keeps you from screwing in more than 6A fuses and screw in 25A ones! Saves much money! And your 1 mm2 wires will be really happy they can finally show what they're actually able to do without the restrictions of that ole fuse!
Seriously, the old lady next door in our appartment house had cloth covered 1 mm2 wires (correctly fused @6A). When she got the new washing mashine, the "electrishun" completely removed the gauge rings from one circuit, replaced the other 2 with 16A ones and screwed in 4 16A fuses. This is how we (my dad is the landlord) found this nice setup. I replaced them with 10A Diazed breakers until I put in a completely new 5 circuit din-rail panel with main RCD and all new wiring.
