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    Changing single light switch - Helpppppp!!

    Hi all I'm changing over a standard single plastic non earthed light switch to a balcony. Current switch has a common in and L1 out. I've opened up the new single metal light switch which I've earthed, however there's no Common and L1, but L1, L2, L3 & L4. L1 L2 L3 L4 Is it...
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