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 dimmers for T8 led tubes
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nascardoug
Starting Member

USA
2 Posts

Posted - 09/22/2012 :  08:57:26 AM  Show Profile  Reply with Quote
Does anyone know if the X10 dimmers will work with the T8 LED tubes?

Geo
Advanced Member

Canada
582 Posts

Posted - 09/22/2012 :  10:39:11 AM  Show Profile  Reply with Quote
To the best of my knowledge those tubes, unlike LED Christmas lights, contain a switching constant current generator. That means dimmers of any type will not work with them.

GJN
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BLH
Advanced Member

4360 Posts

Posted - 09/22/2012 :  1:29:08 PM  Show Profile  Reply with Quote
I doubt it.
I have tried a few standard A19 Dimmable LED bulbs on an X10 two wire dimmer. With no success at all. As they steal their power through the load itself.
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one4gatr
Starting Member

USA
2 Posts

Posted - 09/23/2012 :  6:30:52 PM  Show Profile  Reply with Quote
floros need a dimming ballast. So if your fixture doesnt already have a dimmable ballast you would need to install that first.

Hope that helps.

Mark
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nascardoug
Starting Member

USA
2 Posts

Posted - 09/24/2012 :  05:39:51 AM  Show Profile  Reply with Quote

I am not using standard T8 florescent lamps, I am using T8 LED lamps...

quote:
Originally posted by one4gatr

floros need a dimming ballast. So if your fixture doesnt already have a dimmable ballast you would need to install that first.

Hope that helps.

Mark

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Geo
Advanced Member

Canada
582 Posts

Posted - 09/24/2012 :  06:39:29 AM  Show Profile  Reply with Quote
Just like I said - LEDs require a current source. Small LEDs such as Christmas lights can use resistors and therefore will work with dimmers. T8, if it used resistors, would dissipate too much heat and the power lost through the resistor would make it hardly energy efficient. A switching current regulator, on the other hand, has efficiency in the upper 90 percentage.
This is the same as with the LED light bulbs. There are current regulators which can work with dimmers but unless the light states specifically that it's dimmable, I wouldn't try it - unless you are prepared to write off the cost of either the dimmer, the tube or both.

GJN
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one4gatr
Starting Member

USA
2 Posts

Posted - 09/24/2012 :  07:47:32 AM  Show Profile  Reply with Quote
lol... sorry about that Doug...


That said I have seen both dimmable and non-dimmable t8 replacement bulbs. Do you have the manufacturer name? p/n?

Mark

quote:
Originally posted by nascardoug


I am not using standard T8 florescent lamps, I am using T8 LED lamps...

quote:
Originally posted by one4gatr

floros need a dimming ballast. So if your fixture doesnt already have a dimmable ballast you would need to install that first.

Hope that helps.

Mark



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Geo
Advanced Member

Canada
582 Posts

Posted - 09/24/2012 :  3:40:46 PM  Show Profile  Reply with Quote
LEDTronics Inc. make T8 bulbs.

GJN
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