It was another, shorter video, not by TC. Just different voltages (or maybe there were other variables) one after the other until the water boiled really quickly and afterwards the kettle blew a fuse or broke (can't remember).

I guess many people have tried doing something like this. But I'll watch TC's video, too - he hasn't disappointed me so far.

Edit: Watched it. Not the same video, but this one had a lot more info and troubleshooting than what the one I had in mind.