I have a dual 1-way dimmer switch, 240V rated for 40W-400W, to which one of the dimmers has 5 x 60W dimmable bulbs (ceiling lights) and always works without any issue, and the other dimmer has 4 x 28W dimmable bulbs (wall sconces) with which we are regularly having trouble.
Every time a sconce bulb goes pop, the circuit breaker trips and the associated dimmer dies while the other dimmer on the switch continues to work. We've had this not just on this particular lightswitch installation but also on another in the same property where once again wall sconce bulbs popping kills the associated dimmer.
Is this a common issue? At first I wondered whether with bulbs pointing upwards maybe if the filament dropped into the base it would cause a short-circuit and these problems might result, however I get the same issue with Halogen eco bulbs aswell.
Having had to replace these switches around 6 times now its getting a little rediculous. Any ideas what would cause this? If I change the wall scones would that make a difference do you think? Could it just be poor quality switches (typically £15, tried 3 different brands so far).