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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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How to determine Live switch wire
I am changing an extraction fan with timer.
The old fan has 2 red and a black wire but no indication as to what one is live switch, how do I determine what one of the reds is live switch, with the power switch off at mains. |
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