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I bought dimmable energy saver bulbs and when I put the dimmer about half way down they flicker or go off. Why do they do that?

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If the saver bulbs are of Fluorescent lamps type, they can not go to 0 even to 30% (depending on mains voltage: for 240V mains the range is bigger), because they need minimal voltage of about 80-100 V in order to keep the electrical arc. They vary the light level, but if by a normal dimmer give them less than about 80-100 V (max value), they will go out.
You have about 80% iconomy(compared to normal incadescent lamps) at rated voltage and it can be rased to 90 - 92% at minimum light, but not more.

You should use a special diimer if you wish to use the whole range for dimming.

Posted on Aug 07, 2010

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1 Answer

My led lights start to strobe when I turn on exterior light that is fed from the same line circuit. Solution?


There are two things coming into play here; the lamps and the dimmer(s).

First; LED and CFL type lamps that are to be used on a dimmer switch - must be identified for that use. Looks for the word dimmable on the packaging or bulb itself. These lamps are generally a little more expensive than their non-dimmable counterparts. If it does not indicate it is dimmable, then it isn't - and should not be installed on a circuit controlled by a dimmer switch.

Second; a dimmer switch that will be used to control LED and CFL bulbs (that are identified for use with a dimmer) must also be identified for use with dimmable LED and CFL bulbs. Again, these dimmer switches will be identified for this use and will cost more than those that work with standard filament type bulbs.

Lutron has dimmers for your circuit called a "C•L™ Dimmer" and supports Incandescent / Halogen, Dimmable Compact Fluorescent (CFL) and Dimmable Light Emitting Diodes (LED) type lamps. have a look here:
Lutron Maestro Dimmer and Switch Models

Also, be wary of the total load (wattage) of the lamps being controlled. If you have multiple dimmers in the same box, derating of the switch's wattage capacity (due to increased heat) will be required.

Dec 03, 2015 | Maestro Electrical Supplies

1 Answer

Can I use a dimmer switch with light bulbs whose packaging makes no mention of whether or not the bulb is "dimmable"? (be they incandescent, CFL or LED)


Most old dimmer switches do not work with energy saving/led bulbs, they will work fine with the old style filament bulbs, the newer dimmer switches will be compatible with energy saving bulbs and will indicate on the packaging!

Dec 27, 2014 | Electrical Supplies

1 Answer

Are led bulbs dimmable


Dimmable led gu10 bulbs are an increasingly common sight in many homes and businesses. Touting numerous benefits, these bulbs are recommended for their lower energy use when compared to traditional incandescent bulbs, leading to a healthier environment and a healthier wallet.

CFLs, however, are not a one-size-fits-all product. In some cases, consumers have to be sure to buy the appropriate bulb for the use they have in mind. Fortunately, as CFLs have risen in popularity, bulbs designed for use with dimmer switches have been introduced to the market.

Nov 29, 2013 | Electrical Supplies

1 Answer

How to do energy saver dimming ?


Most modern dimmers provide normal energy savings. They reduce the total amount of watts consumed on the circuit. Many years ago, dimmers only reduced the watts consumed as light - making up the difference as heat in the dimmer switch. A 100W light turned down to 1/2 wattage at a dimmer switch resulted in 50 watts of light at the bulb, but 50 watts of heat was created in the switch. That was zero energy savings. The newer electronic dimmers will still let 50 watts be used as light, but only a few watts as heat in the switch.

To maximized energy savings, use of new cold cathode technology lights such as CFL (compact fluorescent lamp), LED (Light Emitting Diode), etc. types are suggested. You can use these lamps on a dimmer to furrther reduce the amount of energy used - but only if the lamp indicates that it is dimmable.

If the lamp or fixture does not specifically state it can be used on a dimmer, don't. This includes powering a light through a dimmer that is set to maximum brightness. Use a standard non-dimming switch instead.

I hope this helps & good luck!

Apr 14, 2012 | Electrical Supplies

1 Answer

Installed 6696 When turned of the lights flicker light bulbs are energy saver not incadescat


This switch is made for incandescent load only up to 300 watts.You will need to find another type of switch or change your light bulbs to incandescent bulbs.

http://sbeelectricandhvac.com/

May 23, 2011 | Leviton Anywhere Switch - 6696-W - White

3 Answers

If the legrand dimmer 400w - pro21 can function with led dimmable light "philips master led spot "


The answer is NO. You need a Trailing Edge dimmer to control LEDs.

The Phillips master LED spot manual says
:
Lighting controls: bulbs are dimmable 20-100% with ""select"" Trailing Edge RC devices
http://www.prismaecat.lighting.philips.com/FredhopperPDFWebServiceInter/docts/1d8ea75f-e889-424d-92dc-450fbeb85f6a/Smart_LED_Spot_da.pdf

The Legrand pro21 manual does not say anything about being a Trailing edge dimmer.
http://www.legrand.com.gr/gr/gr/liblocal/internet_greece/PDFS/NOTICES/IOBL/ROOSTATES/775637EN.pdf

Legrand diagrams show what appears to be incandescent bulbs, and say nothing about LEDs

LEDs cannot be dimmed as ordinary incandescent (tungsten) bulb.

More reading:
Wikipedia article on dimmers includes technical stuff on Trailing edge dimmers
http://en.wikipedia.org/wiki/Dimmer

2 sites show LEDs bulbs that dim:: both seem new ...
http://news.thomasnet.com/fullstory/LED-Bulbs-feature-smooth-dimming-range-566574

http://www.earthled.com/lumiselect-dimmable-led-light-bulbs.html

Oct 11, 2010 | Legrand On-Q/ ALC 600W Dimmer Switch,...

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