Loose wires
Finding loose wires that you don't know about in a house or office is the time you pull out a meter and check for tingly stuff leaking out the ends. Absent having a meter to hand, licking the wires to see if they're live is not recommended.
As for creative fusing substitutions the web is rife with risible charts indicating alternatives to commercial cartridge fuses -- the 12mm galvanised bolt is typically rated "2000A slow blow".
Biting the hand that feeds IT
