Electrocution from Electro-execution, from the introduction of the Electric Chair, [ thanks for that NJW, BTW ].
If not fatal, then it's just an electric-shock?
Any more names for a non-fatal shock- how about electropardon?
Aside:
My son informs me a penitentary just sacked an electrician who refused to work on an electric chair.
Claimed it was a death-trap.
[Sorry!]
Alan