I'm not an electrician but I know basics. I tried to wire a dimmer switch in one of my bedrooms and I had a problem.
I turned off the power and removed the switch face and had 4 wires; 2 red, 1 black and the earth to the back box.
I terminated the 2 red in L1 and the black into COM. I also added a small earth wire from the switch face to the back box as it said it had to be earthed as it was metal. Turned the power back on and the light worked on/off but didn't dim. Then after about 5 minutes it tripped and would not go back on. So I placed the old plastic switch back on and it worked.
Why did the switch trip? Was my wiring wrong? The bulb was a energy saving one. Thanks. [/u]
I turned off the power and removed the switch face and had 4 wires; 2 red, 1 black and the earth to the back box.
I terminated the 2 red in L1 and the black into COM. I also added a small earth wire from the switch face to the back box as it said it had to be earthed as it was metal. Turned the power back on and the light worked on/off but didn't dim. Then after about 5 minutes it tripped and would not go back on. So I placed the old plastic switch back on and it worked.
Why did the switch trip? Was my wiring wrong? The bulb was a energy saving one. Thanks. [/u]