Lutron Rania dimmers and LED bulbs

[opps]

Hi all.

A customer has Lutron Rania light switches. She wants to dump the halogen/incandescent bulbs (E14 ses) that she has on her chandeliers.

She purchased 4W Sylvania candle LED filament bulbs. I suspected that the switch would not function properly if I swapped out all of the 10 times 40w bulbs for 10 times 4W bulbs. I got to the point where it only one incandescent bulb needed to be kept in place.

I have since checked the specifications for the dimmer

https://cdn.ukelectricalsupplies.com/documents/lutron/rania-f-spec-en.pdf

It looks like the minimal load is 50W and that it auto switches from leading to trailing edge.

Lutron Rania Programming

Lutron Rania Programming guide

issuu.com

Would having a single incandescent with LEDs cause any problems with the Lutron? At £100 to £150 for each switch, I don't think she wants to replace them.

I am currently trying to find E14 bulbs that have sufficient wattages to work once I swap out some of the 4W bulbs.

She also has GU10 bulbs that work off the other side of the switch, again, I guess that I need to ensure that the total wattage exceeds 50W.



And finally she has some regular dimmers. the push/on off rotary types. Recommendations to replace the modules to work as low as 12W would be greatly appreciated.

Many thanks

 

[Taylortwocities]

Would having a single incandescent with LEDs cause any problems with the Lutron?

No, it shouldnt cause any problems. The dimmer will be working in its "comfort zone"

You could try adding a "LED load resistor" component to increase the basic current draw.
It sort of defeats the benefit of a cheaper to run LED light though...
This sort of thing: https://www.mr-resistor.co.uk/Product/10031

 

[winston1]

The spec says:
1. It is for halogen lights (LEDs are not halogen)
2. Don’t mix light types (1 halogen and 9 LEDs is mixing light types)
3. Minimum load 50w (40 is less than 50)

 

[Taylortwocities]

The spec says:
1. It is for halogen lights (LEDs are not halogen)
2. Don’t mix light types (1 halogen and 9 LEDs is mixing light types)
3. Minimum load 50w (40 is less than 50)

And your suggestion to resolve the problem is what, exactly.....?

Bearing in mind that - as you always say - manufacturers dont know what they are talking about

 

[ericmark]

It is for halogen lights

When have you been able to dim halogen lights successfully, you know as well as I do that the whole idea of the quartz halogen lamp is the keep the quartz that hot that tungsten will not coat it but will return to the filament, in the end the filament ends up with an uneven thickness and blows, but it takes longer to do this as it does no adhere to the quartz, if you dim quartz lights their life is reduced, so you don't dim quartz. Or if you do not by very much.

Quartz halogen is Incandescent so the instructions don't really make sense, and as to dimming fluorescent that is rather specialist.

The problem is frequencies generated by the coil of a lamp or the electronics within the lamp can cause flicker. And the only real way to find out is to suck it and see. Well before LED lighting came out you could find on changing a bulb the dimmer would flicker, with LED the problem has been made worse, but it is not new.

I had the problem with Energenie on/off electronic switches, not even dimmers, there are some makes which seem to be better than others, but only way I cured was trial and error.

 

[winston1]

And your suggestion to resolve the problem is what, exactly.....?

Bearing in mind that - as you always say - manufacturers dont know what they are talking about

Really for the OP to decide. Keep the halogens - doesn’t want to do that, change the dimmer - doesn’t want to do that. Those are about the only options.

 

[winston1]

When have you been able to dim halogen lights successfully, you know as well as I do that the whole idea of the quartz halogen lamp is the keep the quartz that hot that tungsten will not coat it but will return to the filament, in the end the filament ends up with an uneven thickness and blows, but it takes longer to do this as it does no adhere to the quartz, if you dim quartz lights their life is reduced, so you don't dim quartz. Or if you do not by very much.

Quartz halogen is Incandescent so the instructions don't really make sense, and as to dimming fluorescent that is rather specialist.

An example for TTC of manufactures not knowing what they are talking about.