(I'm not home and don't trust this computer's security, so I'm claiming to be who I am.)

Contrary to popular belief, a fuse is not a good protection device. It is only really useful when there is a short circuit, not when something draws too much current. As an example, find a 100mA fuse and connect a 100 Ohm 2W resistor in series with it to a 12V battery. Now 12V ans 100 Ohm gives you 120mA. It will take hours before the fuse blows. Now connect another 100 Ohm parallel to the first one to give you 240mA. It is likely you will wait an hour and still nothing happens. In fact, it will happily take 1A for some time before it goes instantly. A fuse is only good in the right place, e.g. the cigaret lighter is not fused.