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Why reduce 32A to 20A? - surely its ultimately safer if you dont need the watts to protect against short circuits and cable over heating

OK more like bomb disposal than welding in reverse. Is it safe to change MCBs with the consumer unit isolated by the 100A switch, obviously touch as little as possible and use VDE tools. I want to reduce the old MCBs from 32A to 20A - Garage Shed, security lights, and remove a 5 amp bell MCB...

I know this is potentially dangerous but needs to be done. using correct gear, electricians gloves, VDE cutter/ stripper and phillips, goggles, rubber mat, no other metal near, CU switched off, how many of you would cut the meter tails (individually!) , strip and feed into plastic isolator...