I have a small portable fan that, for reasons beyond my understanding, has a fuse inside of the plug. The fan stopped working because the fuse broke. At the store, I couldn’t find a fuse nearly as tiny as the one in the plug, but a colleague suggested I look in my Christmas lights because they often have the same size fuse in those plugs. Surely enough, I found the size fuse as a spare in a box of unused Christmas lights. The only difference is the fuse is labeled as 3 amps, and the plug of the fan has this text on it:
So, I’m just curious what danger lies in using a 3 amp fuse here. Could the fan be damaged? Could the house burn down? Something else?