Crossword Genius

Bulbs of 50 amps (5)

Ross

I believe the answer is:

lamps

'bulbs' is the definition.
(I know this)

'50 amps' is the wordplay.
'50' becomes 'l' (Roman numeral).
'l'+'amps'='LAMPS'

'of' acts as a link.

(Other definitions for lamps that I've seen before include "light fittings" , "Devices for giving light" , "Lights" .)

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