re failed dimmer switch

[AJH]

I fitted five 50watt 240VClick downlights in parallel in our lounge ceiling to replace wall lights. There was a two way switch at each entrance to the lounge so I kept the wiring intact but fitted a 400w Click dimmer switch one end. This dimmer started to flicker slightly after a short time then suddenly failed. Thinking it was faulty I took it back and exchanged it. The new dimmer has now started flickering. The guy at the shop said on the first visit that about 10% of dimmers he sells develop a fault. I'm wondering if I have been really unlucky or could there be another reason?

Any ideas?

thanks

AJ

[Woody]

Check the rating carefully. Most dimmers have different ratings for incandescent and for halogen bulbs, typically the latter is derated by about 2/3. So your 400W incandescent is probably only rated 150W or less on halogen - its all about inrush current.

[AJH]

thanks Woody, I have contacted Click, they said the 400w dimmers are all rated the same ie only one type for mains & 12v, they have asked me to send it to them for checking. I have another Click dimmer connected to 4x 12V 50W downlights and it's fine. maybe it's the wiring but I can't see how that could be, I'll post again when Click respond.

AJ