LED downlights on a dimmer

[ringer]

Customer has six 240v GU10 50W downlights in his kitchen, switched with a 400W dimmer. Two lamps blew this week and took out his dimmer, which I am replacing for him. He mentioned that he is considering replacing the lamps with LEDs for reliability and saving on running costs. Now I am not an expert in lighting, but believe there may be incompatibilities or problems combining LEDs with dimmers, problems being either the dimmer won't work or there will be severely reduced lamp life. As he is a valued customer, and he will be spending a fair wedge (£200+) on buying the LEDs, I would like to give him some advice on what LED/Dimmer combination would work best for him. I have found a few websites giving general advice about LEDs, but it is general advice, and quite frankly my head is spinning with trying to absorb the info and come up with a workable solution for him. So can someone give me a specific recommendation of LED lamps (5W, kosnic, etc) and dimmer (type) for this situation?

 

[Benny_Boy]

get some dimmable rated gu10s. like these
LED Lights: LED GU10, MR11, MR16, G4, Strips & Bulbs - LEDcentre

should be ok with a triac dimmer. like this:
Avenue Supplies Lutron Dimmer Switch with Status Light White 1 Gang 1 Way Preset Slide LLSI-502B-FW Electrical Switches Lighting And Dimmer

You can get 'em with a knob instead 'n all. not cheap though!

cheaper switch here
http://www.bewdirect.co.uk/home/m/Shop/id/484/

 

[ringer]

Thanks Benny Boy, that's just what I was after. Do those Luton dimmers fit on a standard 1 gang 25mm deep backbox, or do they need a different backbox? And do they need a neutral at the switch, because he only has C, L1 and cpc there at the moment?

 

[Benny_Boy]

they're deep. I'd go for a 32mm jobbie, and you don't need a neutral at the switch. It get's back as a series circuit with your load. That's the lyneos anyway.

here's the lowdown on 'em
http://www.lightfan.co.uk/catalogue/Light_Fantastic_Lutron_Dimmer_Controls_Priced.pdf

I should point out though that I'm not a lighting expert either but this combo seems to work well. No complaints so far!