Safety officer rewired fan incorrectly (4,6)

I believe the answer is:

fire warden

I'm a little stuck... Click here to teach me more about this clue!

'safety officer' is the definition.
The definition and answer can be both people as well as being singular nouns.
Perhaps you can see a link between them that I can't see?

'rewired fan incorrectly' is the wordplay.
'incorrectly' is an anagram indicator (I've seen this in other clues).
'rewired'+'fan'='rewiredfan'
'rewiredfan' anagrammed gives 'FIRE-WARDEN'.

Can you help me to learn more?

I've seen this clue in The Independent.

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