So I read somewhere that cables can only accept up to a certain "voltage" (not understanding what that means in IC terms) before they melt. Then, I read somewhere else that this feature had been removed and that "voltage" had simply been reduced to the amount of EU travelling through a cable section, while these no longer melted when subjected to too much current. Yet again, somewhere else I read that this was no longer the case and it had all been reversed (?).
First question: what is the state of development regarding cables, after all? What does "voltage" mean, is it still active, do cables still melt and, if they do, when do they melt?
Second question: what is the correct recipe for glass fibre cables? Is it the one on the main Wiki page? Are there more?