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Are led bulbs dimmable - Electrical Supplies

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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.

Posted on Nov 29, 2013

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Must I replace its 100 watt Sylvania incandescent bulb with another incandescent? What about an equivalent CFL or LED bulb?


Both will work fine as long as the light isn't on a dimmer. You can't dim CFL bulbs.

If you do have a dimmer, you can dim LED bulbs as long is you buy dimmable LED bulbs.

Which LED bulbs are best for built in dimmers CNET

Dec 29, 2015 | Minka Concept II Flush 44 Ceiling Fan by...

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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

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How do you change light bulbs to LED


If they are not dimmable fixtures just buy the replacement bulbs for whatever fixture your working on in led.

Oct 10, 2015 | RVs

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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

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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