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  • Just went to change a one way dimmer to a one way switch and the black wire was in common and red was in L2

    I thought red went in common and black in L1 ??

    Probably leave it to an expert now as that has confused me

  • It doesn't really matter, a switch can go either way round if it is just a one way switch.

  • The black one should be sleeved to show that it's a line conductor on a switch line. They are rarely sleeved in the real world.

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