Crossword Genius

Normal electricity supply runs into working unit (10)


I believe the answer is:


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'normal' is the definition.
(I've seen this before)

'electricity supply runs into working unit' is the wordplay.
'electricity supply' becomes 'mains' (I've seen this before).
'runs' becomes 'r' (cricket abbreviation).
'into' indicates putting letters inside.
'working unit' becomes 'team' (team is a kind of unit. I am not sure about the 'working' bit.).
'r' inserted inside 'team' is 'tream'.

Can you help me to learn more?

(Other definitions for mainstream that I've seen before include "Relating to what is normal or standard" , "According to Standard" , "Current" , "In accordance with what is normal or standard" , "People representing most common ideas" .)

I've seen this clue in The Times.
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