![](https://lazysoci.al/pictrs/image/b6d69fec-d3fc-4290-a711-8fb521f89f0c.png)
![](https://lemmy.ca/pictrs/image/ed7bd7d8-a25a-496b-8c3c-3715ec09b129.png)
Still not nearly as safe. Leaving it up to the home owner to replace the fuse/breaker for each circuit each time a device of a different amp requirement is used is very… naive? The manufacturer of the device shipping the item with the fuse that matches requirement is easier and safer. It may have been born from the ring mains requirement but it’s much safer because of it.
The wire from the plug to the device isn’t the same size as that in the wall. So you can have a device 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 central side. Of course there is a main fuse. And it is sized based on the limits of the wires in the wall