Electricians help with a light dimming question please...

[freid]

I've recently swapped three single gang switches for dimmer switches. Two are working, but one set barely dims.

Looking into why this might be happening looks like it might be something to do with the dimming module rating. Hoping someone might be able to put me straight, and let me know if I should change the ones that do work for more specific modules:

1) 3x Pendant Hall Lights. Using 3x Dimmable LED E27 6.5W bulbs. Dimmer is a Knightsbridge Leading Edge 40-400W. Lights barely dim at all - if full brightness is 100%, then maybe 98%...
2) 1x Double Wall Light. Using 2x Dimmable LED B22 6.5W bulbs. Dimmer is a Knightsbridge Leading Edge 40-400W. Lights dim from virtually 0% to 100%.
3) 1x 5 Light Chandelier. Using 5x Dimmable LED E14 4W bulbs. Dimmer is a Knightsbridge Leading Edge 40-400W. Lights dim pretty well maybe 50% to 100%.

So looking for a bit of advice please on the correct dimming module type and rating for each set of lights to achieve optimum dimming please!

Thank you!

 

[jcampbellsmith]

I don't think it's the dimmers that are the issue. For the 3 and 5 bulb units I would remove all bulbs bar one and test the bulbs individually. The bulbs may not all be genuine dimmable bulbs.

Regards

JCS

 

[ryanh40]

Also get yourself some decent quality dimmable lamps don’t go for cheap stuff! LED and dimmers aren’t great together! Zanos dimmers are decent

 

[TomT3]

I've recently swapped three single gang switches for dimmer switches. Two are working, but one set barely dims.

Looking into why this might be happening looks like it might be something to do with the dimming module rating. Hoping someone might be able to put me straight, and let me know if I should change the ones that do work for more specific modules:

1) 3x Pendant Hall Lights. Using 3x Dimmable LED E27 6.5W bulbs. Dimmer is a Knightsbridge Leading Edge 40-400W. Lights barely dim at all - if full brightness is 100%, then maybe 98%...
2) 1x Double Wall Light. Using 2x Dimmable LED B22 6.5W bulbs. Dimmer is a Knightsbridge Leading Edge 40-400W. Lights dim from virtually 0% to 100%.
3) 1x 5 Light Chandelier. Using 5x Dimmable LED E14 4W bulbs. Dimmer is a Knightsbridge Leading Edge 40-400W. Lights dim pretty well maybe 50% to 100%.

So looking for a bit of advice please on the correct dimming module type and rating for each set of lights to achieve optimum dimming please!

Thank you!

Evening,

I would look at trailing edge dimmers personally- also the sum of your lamps wattage is well below the minimum wattage stated on your dimmers (40w)
1) amounts to 19.5 w
2) amounts to 13w
3) amounts to 20w

I’m not surprised they are not working properly based on the above. As stated by another member dimmable retrofit lamps and dimmers can be a bit of a pain at times. TLC direct is an accessible wholesaler for people not in the trade. They sell Varilight trailing edge dimmers that Ive used in the past that always seem to work. Their publicised min wattage is 0w…

1 Gang 120W V-PRO Silent LED Dimmer - White​

Product Code: VL JQP401W

Maybe buy one then try it on all instances before buying three. Unfortunately it can be a bit of trial and error to find what works best.

Best regards

Tom

 

[charlie222]

Yes, it looks like the dimmer switches are not compatible with LED lamps. You need LED dimmer switches and dimmable LED lamps.

 

[freid]

Thank you all, especially TomT3 - that is just what I needed.

 

[AM_Lillycombe]

I've recently swapped three single gang switches for dimmer switches. Two are working, but one set barely dims.

Looking into why this might be happening looks like it might be something to do with the dimming module rating. Hoping someone might be able to put me straight, and let me know if I should change the ones that do work for more specific modules:

1) 3x Pendant Hall Lights. Using 3x Dimmable LED E27 6.5W bulbs. Dimmer is a Knightsbridge Leading Edge 40-400W. Lights barely dim at all - if full brightness is 100%, then maybe 98%...
2) 1x Double Wall Light. Using 2x Dimmable LED B22 6.5W bulbs. Dimmer is a Knightsbridge Leading Edge 40-400W. Lights dim from virtually 0% to 100%.
3) 1x 5 Light Chandelier. Using 5x Dimmable LED E14 4W bulbs. Dimmer is a Knightsbridge Leading Edge 40-400W. Lights dim pretty well maybe 50% to 100%.

So looking for a bit of advice please on the correct dimming module type and rating for each set of lights to achieve optimum dimming please!

Thank you!

I'm surprised it works at all...

LED: you are supposed to use trailing edge.
The wattage: Your lamps is below the minimum range of your dimmers.



FYI: once you have the correct dimmers you can wire a danlers res load into each circuit to prevent flickering and low level dimming.

 

[freid]

Now sorted - trailing edge dimmers have been fitted and everything is working perfectly. Thanks all for help.