I changed a one way switch to a dimmer - no probs; but when I changed the lounge pendent to a 4 x 50w spots - the dimmer was killed.
The set up is:
Dimmer - one way - 2 reds only 400w load (250w for GU10 spots)
Ceiling Rose 1 red, 2 blacks, 3 yellow/greens
Existing pendent L, N, E (L...