The wire getting the plug to the device isn’t the same as that in the wall. So you can have a cable melt and light on fire without tripping the main fuse. A fuse in the plug prevents this.
Your edit is assuming they’re isn’t a fuse at the better side. If course there is a main fuse. And it is sized based on the limits of the wires in the wall
The wire getting the plug to the device isn’t the same as that in the wall. So you can have a cable melt and light on fire without tripping the main fuse. A fuse in the plug prevents this.
Your edit is assuming they’re isn’t a fuse at the better side. If course there is a main fuse. And it is sized based on the limits of the wires in the wall