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GE Ultramax T8 instant start ballast

GE Ultramax T8 instant start ballast

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Got this from my dads workplace. They changed to LED tubes and this ballast was left behind by the crew so i got it.

It runs a wide assortment of lamps from FE15T8 to F40T8. The full spec sheet from GE lists F25T12 also which is interesting.

20171112_130053.jpg 20170806_141512.jpg 20170325_160943.jpg 20170325_155436.jpg

Light Information

Light Information

Manufacturer:General Electric
Model Reference:UltramaxT8
Lamp
Lamp Type:T8
Fixture
Ballast Type:Electronic Instant Start
Electrical
Wattage:Various
Voltage:120-277

File information

File information

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Filename:20171112_130053.jpg
Album name:Lightingguy1994 / T8 Ballasts
Keywords:Gear
File Size:431 KB
Date added:Nov 12, 2017
Dimensions:2464 x 1386 pixels
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Date Time:2017:11:12 13:00:53
DateTime Original:2017:11:12 13:00:53
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Exposure Time:1/24 sec
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Focal length:3.6 mm
ISO:100
Make:LG Electronics
Model:LG-K557
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streetlight98
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Nov 12, 2017 at 06:12 PM Author: streetlight98
What's an FE15T8? The HF version of the preheat F15T8? Never seen a T8 ballast list F15s before. ...Or F36T8s, which are the European version of the F34T12 designed to run on F40 preheat ballasts.

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Lightingguy1994
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T12 are and always will be my favorite bulb


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Nov 12, 2017 at 11:05 PM Author: Lightingguy1994
I believe you are correct, the FE15T8 is for electronic ballasts , the regular F15 is preheat. Im guessing because this supports F36T8 , using F34T12s would be okay on this gear ? Be a good way to spend some crappier Altos
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Nov 12, 2017 at 11:09 PM Author: nicksfans
The T8 lamps this ballast is designed for run at 265 mA. The F34T12 runs at 460 mA, so it would be severely underdriven and its cathodes would sputter without continuous heating.

I like my lamps thick, my ballasts heavy, and my fixtures tough.

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Lightingguy1994
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Nov 12, 2017 at 11:16 PM Author: Lightingguy1994
Oh right I forgot about mA, the ballast did not list mA
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^homebuilt fixture


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Nov 13, 2017 at 09:11 PM Author: xmaslightguy
@Lightingguy1994:
you could wire it for 2x overdrive of 2 lamps* then it'd be right around the correct output for F34/F40 T12's

*if this one has EOL protection (which it might since it looks similar to some I have that do) it won't overdrive

Colored Fluorescent's such as F40T12 Red or  Green or Blue are awesome...

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Nov 14, 2017 at 01:39 PM Author: Lightingguy1994
Hi xmaslightguy , where did you get the quote about the EOL protection ?
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Nov 14, 2017 at 07:38 PM Author: xmaslightguy
@Lightingguy1994:
Actually not a quote, just meant as a note for the '*' I put on overdriving 2 F40's..

I have some GE 4xF32 ballasts IS, and they have EOL protection (works individually for each lamp.) . They also won't overdrive - instead you just get a dim glow from the lamp (my guess there is the ballast 'sees' bad lamps on those 2 channels). Not all GE ballasts have it though.

Colored Fluorescent's such as F40T12 Red or  Green or Blue are awesome...

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Nov 14, 2017 at 08:50 PM Author: Lightingguy1994
I'll test mine out and see if it has protection, hopefully it does
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Nov 15, 2017 at 03:56 PM Author: streetlight98
I'd rather not have the EOL protection since you can see cool lamp EOLs with non-protected ballasts.

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Nov 15, 2017 at 03:58 PM Author: nicksfans
I agree, no eol protection is more fun. You just have to be careful that everything makes good contact so you don't melt stuff due to arcing.

I like my lamps thick, my ballasts heavy, and my fixtures tough.

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