Crossword Genius

Even when wired correctly it can still shock (8)

Ross

I believe the answer is:

telegram

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'can still shock' is the definition.
The definition and answer can be both related to communication as well as being singular nouns.
Maybe there's an association between them I don't understand?

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for telegram that I've seen before include "Pre-1980s electronic message" , "Message sent by wire" , "Message transmitted by wire" , "cable" , "Dispatch" .)

I've seen this clue in The Globe and Mail.
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