/sci/ - Science & Math

>>12677984
Maybe I'm misunderstanding the question, but that's just how fuses are supposed to work. The appliance works fine when fed lower power, since the standard in the US is smaller than in the EU. However once the wattage exceeds a certain threshold, it's possible for components to start failing. To make it so that the failure will always occur in the same place to make repairs easier & less costly, fuses are included in circuits as an intentional weakpoint. When things get too hot, the fuse literally burns out (the filament inside melts or whatever), breaking the circuit and preventing any more power from flowing into the system to protect the more costly components.