live-wire

Noun

live wire (plural live wires)

1. An electrical wire through which there is a flow of electrical current.
   • Two boys got electrocuted when a live wire fell on the auto-rickshaw in which they were sitting.2006 September 27, “Two boys electrocuted”, in The Hindu, India, retrieved 24 Dec 2008
2. (figuratively) An especially energetic, alert, or vivacious person.
   • With his thin, eager face and darting hands he was more than a live wire - he was a whole bundle of live wires.1925 July – 1926 May, A[rthur] Conan Doyle, “Which Describes an Evening in Strange Company”, in The Land of Mist (eBook no. 0601351h.html), Australia: Project Gutenberg Australia, published April 2019

   Synonyms:

   go-getter, life of the party, self-starter