Originally Posted by ItsJustMe

You should never leave the US then. Japan is maybe OK. Pretty much the rest of the world uses 220v as their standard mains outlet.

It's current that's going to vaporize the cable. Since it's going through a human body, it's hitting a resistance of at least a thousand ohms even if the person is sweaty and it's a direct skin to metal contact across a small piece of their body.

Assuming worst case 1,000 ohms and 220v, that's 220/10000 = 220 milliamps. The wire will probably carry that indefinitely. A very thin wire would get pretty warm, but i doubt it would actually melt in two. At 220v that's only 220*.22 = 48 watts.

Note that at 110v, you'd still be dead. 110ma at 110 volts is MORE than enough to stop your heart. Though of course assuming the same design on the charger it would be half as likely to jump an identical air gap in the first place. If you got the thing wet though it would fail the same either way.