A lot of people get these words confused. To electrocute is to kill using electricity. If you live to tell the tale you've been shocked. And for the same reason saying ''electrocuted to death'' is a redundancy.
One can be electrocuted without dying. It depends on how many Volts are involved :o)
It's no redundancy.
They were shocked if they lived not electrocuted.
To electrocute is to kill using electricity. If you live to tell the tale, you've been shocked, but not electrocuted. For the same reason, the phrase "electrocuted to death" is a redundancy.
Here's what the dictionary says:
"electrocute
[Hide phonetics]
verb [T often passive]
to kill someone by causing electricity to flow through their body:
He was electrocuted when he touched the bare wires."
http://www.dictionary.cambridge.org/define.asp?key=25092&dict=CALD
Thus you cannot be electrocuted without dying ... and, by the way, it's got more to do with how many amps rather than how many volts are involved :o) (though the two are related).