Return to the thumbnail page Display/hide file information See previous file See next file

LED tube vs Philips T8 tube

LED tube vs Philips T8 tube

Click to view full size image

At my office...maintenance is now spot-replacing using LED T8 tubes on the existing instant-start electronic ballasts. I don't know the brand of this one; there have been a number of brands used. This particular one (left) looks about 5000K and has no markings, has standard fluorescent end caps and it's very hard to tell that it's an LED tube at all. The right lamp is a Philips Alto 6500K that's aged some, but it also became dimmer once the LED was installed on the other side, and started striating permanently, which makes me think that the LED is significantly affecting the lamp operating current on the other ballast output. I still think it's better to eliminate ballasts and use direct-wire LEDs if converting to LED, but then some fool later probably will replace a burned out LED with a fluorescent and fry it.

4th-Marion201930.jpg 175w20MV20can20Swedish20Edmonds2B.jpg LED20vs20T82B.jpg Fresnel_lens_incandescent_SwEd_hosp2B.jpg

File information

File information

Download: Download this File
Filename:LED20vs20T82B.jpg
Album name:arcblue / Lighting in Washington State
Keywords:Lamps
File Size:81 KB
Date added:Mar 07, 2020
Dimensions:636 x 918 pixels
Displayed:65 times
URL:https://www.lighting-gallery.net/gallery/displayimage.php?pos=-174035
Favorites:Add to Favorites
Comments
suzukir122
Hero Member
*****
Online

Gender: Male
View Posts
View Gallery


suzukir123
View Profile Personal Message (Online)
Mar 07, 2020 at 05:03 PM Author: suzukir122
It's also possible based on your description, that this LED tube *could* be harmful to the ballast.
Definitely identical to a fluorescent lamp though, at least from what I see in this pic.

Interests
1. Motorcycles, Women, and Lighting (especially fluorescent)
2. Weighting/staying extremely athletic
3. Severe Thunderstorms of all kinds
4. Food and drinks. So gimme them bbq ribs
Yep
Lighting has been a passion of mine since I was born. I consider everyone on LG to be a friend

streetlight98
Sr. Member
****
Offline

Gender: Male
View Posts
View Gallery

Mike McCann


GoL Mike McCann 88219189@N04/albums
View Profile WWW Personal Message (Offline)
Mar 07, 2020 at 07:32 PM Author: streetlight98
Nice! I have a pair of glass T8 LEDs that look very much like fluorescent lamps. I, too, get concerned about how safe the LED tubes really are on fluorescent ballasts. Especially the ones designed for magnetic ballasts.

And does anyone know if the LEDs are the same brightness regardless of the ballast used? i.e. does a low ballast factor ballast run the LEDs dimmer than a high ballast factor ballast like with fluorescent lamps?

Please check out my newly-updated website! McCann Lighting Company is where my street light collection is displayed in detail.

High Intensity
Full Member
***
Online

Gender: Male
View Posts
View Gallery

EYE 175w MV


GoL
View Profile Personal Message (Online)
Mar 07, 2020 at 07:37 PM Author: High Intensity
I had an LED tube work on a NPF 1-lamp F40 ballast that would not start fluorescent tubes anymore and it appeared to be as bright as when i tested it on a .73A HPF 2-lamp ballast, so no, i don't think ballast power affects LED tubes much.

Old lighting is, and will always be, the best lighting.

streetlight98
Sr. Member
****
Offline

Gender: Male
View Posts
View Gallery

Mike McCann


GoL Mike McCann 88219189@N04/albums
View Profile WWW Personal Message (Offline)
Mar 07, 2020 at 07:44 PM Author: streetlight98
Hmm interesting. I'm guessing you couldn't light fluorescents on the NPF ballast anymore because the cathode heating circuit failed? Were they the special magnetic-designed LED tubes or just standard LED tubes?

Please check out my newly-updated website! McCann Lighting Company is where my street light collection is displayed in detail.

High Intensity
Full Member
***
Online

Gender: Male
View Posts
View Gallery

EYE 175w MV


GoL
View Profile Personal Message (Online)
Mar 07, 2020 at 07:45 PM Author: High Intensity
They were Walmart ones that were designed for use with magnetic ballasts.

Old lighting is, and will always be, the best lighting.

Alights
Full Member
***
Offline

View Posts
View Gallery

USA (120V 60HZ)


View Profile Personal Message (Offline)
Mar 08, 2020 at 09:38 PM Author: Alights
Interesting. They really should stop being cheap and just replace both lamps with LEDs and re use the fluorescent somewhere else. I suspect the ballast is not going to last as long that way. I've seen plenty of issues with ballasts going bad after LED tubes installed. However new ballasts and led tubes seems better, but yeah direct wire LED bulbs are definitely better long term. The universal fit LEDs for magnetic are fine unless your capacitor fails and the lamps will flicker worse than a recifying lamp on LPF . Currently running into that problem a lot, but IS ballasts run slightly brighter and no flicker lines on camera either with electronic. I like the option of going back to fluorescent whenever
arcblue
Full Member
***
Offline

View Posts
View Gallery


View Profile Personal Message (Offline)
Mar 15, 2020 at 03:54 PM Author: arcblue
I agree, it's nice to have the option to go back to fluorescent, though if the LEDs are killing ballasts more quickly that won't be an easy option anyway...I suppose one could always disconnect a ballast and hook it back up again if desired. I didn't know about the flicker on magnetic ballast retrofits when the cap fails. Nowadays when a lamp fails a lot of people put up an entirely new light fixture anyway, so...

I'm lampin...

© 2005-2020 Lighting-Gallery.net | Powered by: Coppermine Photo Gallery