Luceco GR10Q 4-Pin 2D LED Light Bulb 1550lm 12.5W (5003X)

Hi WiganWigan, As there are many variations in emergency systems within fluorescent lighting we cannot guarantee the function or lifespan of any of our LED replacement lamps when used with such systems, so we would advise against using them in this way.

Hi bigloon, The lamp itself is capable of lower output levels if the ballast in the fitting is dimmable and reduces its power output. From what you describe, however, it doesn't seem that you are choosing to dim down the ballast after ignition, so there may be something wrong with it or some incompatibility between it and LED lighting. If you wish to contact us directly to discuss this further we can be reached at:- technical.support@luceco.com

Hi Wes28, The starter being referred to is only present in magnetically ballasted fittings, for electronic ballasts this function is integrated (so there is no need to be concerned by it in these cases). Therefore, when using a 4 pin LED 2D lamp with an electronic ballast there should be no need to change anything.

Hi Bobby28, By light output the 12W LED lamp is the most direct equivalent to a 28W fluorescent lamp, the 6.5W version is more like a 16W (and hence has been designed with the appropriate level of power from the driver in mind) so we would advise sticking with the 12W option.

Hi wstar84, The 4-pin 2D LED replacement lamps are for use with Electronic ballasts, which do not have an external starter option, if you have a starter in your fitting then you would need to use one of the 2-pin Magnetic ballast compatible versions [LUCECO G24D 2-PIN 2D LED LIGHT BULB 1550LM 12.5W (3363X)]