Help with LED Dimming

[David John]

How old is that 400w dimmer? Varilight don't seem to do them anymore.

Got it from screxfix on friday

 

[David John]

Agree with this, 12 watt load on a 400 watt dimmer is insufficient and making the output stage unstable especially at low dimming levels. I'd also go with a 50 or maximum a 100 watt dimmer.

I thought that with a dimmer and LEDs that you had to divide the load by 10 so it would be 40 watts maximum for LEDs or am I tripping?

 

[chris gray]

I think I’m right in saying it’s recommended to run led dimmers at a max of 60% of the rated value

 

[David John]

I changed it for a LAP 100w dimmer switch and it’s fine now! Found out that my neighbours light isn’t dimmable which explains that too!
Thanks

 

[john watts]

I think there is a minimum load with the varilight dimmer.
The varilight dimmers are usually a maximum of 40% of the total wattage, so a 400w dimmer would be 160w maximum , and with only 12w total on this dimmer I think thats too low

 

[john watts]

I changed it for a LAP 100w dimmer switch and it’s fine now! Found out that my neighbours light isn’t dimmable which explains that too!
Thanks

Yes I believe switching to a lower wattage dimmer worked because it had a lower minimum load