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Hi, I would like to replace a white plastic light switch with a metal one. On unscrewing the plastic front plate I see the earth is connected to the metal plate on the back box. Should I leave the earth where it is and connect the two other wires to L1 and Com of the metal switch or should I...

Hi, We have a dimmer switch (2 way 60W min-400W max) running 8 x 50W downlights (GU5.3) in the kitchen. Recently all but 2 bulbs have stopped working. I've replaced bulbs and switched the 2 which are working t the other positions but cannot get the other 6 positions working. I opened up the...