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F24T12 Slimline Westinghouse cool white

F24T12 Slimline Westinghouse cool white

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I had not seen slimline bulbs this short before I saw these two, so I had to add them to my collection. I don’t have a light yet to try them in.

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Album name:Bluesvan / Fluorescent Bulbs
Keywords:Lamps
File Size:513 KB
Date added:Jan 14, 2019
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Date Time:2019:01:13 20:05:16
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fluorescent lover 40
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Lights are awesome! :)


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Jan 14, 2019 at 11:09 PM Author: fluorescent lover 40
Nice finds! 70's.

Power provider: Southern California Edison (SCE)

-Date decoder of some US lamps 1960-present.
-Switch and receptacle collector.
-I'll save any vintage lamp! Smiley

DieselNut
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John


jonathon.graves johng917 GeorgiaJohn
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Jan 16, 2019 at 07:22 AM Author: DieselNut
Sweet find!

Preheat Fluorescents forever!
I love diesel engines, rural/farm life and vintage lighting!

ace100w120v
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Jan 18, 2019 at 09:24 PM Author: ace100w120v
Nice! I think you should be able to buy any 2xF17T8 type fixture at a box store and convert it to F24T12 slimline?
xmaslightguy
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^homebuilt fixture


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Jan 18, 2019 at 09:33 PM Author: xmaslightguy
^ Yep...a 2xF17T8 instant-start ballast wired for overdrive should be around right for a single T12

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Nice finds Bluesvan!

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

don93s
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Jan 18, 2019 at 11:32 PM Author: don93s
I think the only widely available magnetic ballast rated for these is the Universal 213-TC-P. They are all over eBay, sometimes pretty cheap.

link example

Many sellers will take offers.
Lightingguy1994
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Jan 19, 2019 at 01:36 AM Author: Lightingguy1994
What about a 2xF32T8 ballast? Those are usually standard and will run all the way to F17 so I imagine it could run the F24T12 just fine. Some can do F40T8 which is a 5 foot lamp. Sometimes seen in 4 foot
Bluesvan
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Jan 19, 2019 at 05:44 AM Author: Bluesvan

I think the only widely available magnetic ballast rated for these is the Universal 213-TC-P. They are all over eBay, sometimes pretty cheap.

link example

Many sellers will take offers.


Thanks for the info. This is good to know. At some point I think I will be making some of my own lights to run the two foot slimline and my 6 foot slimlines.
don93s
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Jan 19, 2019 at 09:39 AM Author: don93s
@Lightingguy, yeah, the F32T8 IS ballasts would probably work too. It would have to be 2xF32 ballast doubled for one lamp. But, for a two F24T12, you would need to fit two ballasts into fixture instead of one. Maybe use a 4xF32 ballast but those seem to have a higher rate of failure from what I have seen.
xmaslightguy
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^homebuilt fixture


GoL ATL
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Jan 19, 2019 at 11:19 AM Author: xmaslightguy
Quote
I think the only widely available magnetic ballast rated for these is the Universal 213-TC-P. They are all over eBay,

Interesting to know. I figured the correct ballast for these lamps would be hard to find



Quote
What about a 2xF32T8 ballast?

As long as it lists F17T8's yes.



Quote
But, for a two F24T12, you would need to fit two ballasts into fixture instead of one

Actually no. You can just wire the 2 lamps in series with eachother, that would be nearly the same as a single F48T12 as far as the ballast is concerned.

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

Lightingguy1994
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Jan 19, 2019 at 11:27 AM Author: Lightingguy1994
You cant wire them up normally as would be done with F32?

From previous tests Ive done, if one of the lamps is EOL or missing, the other one will partially glow and because theres no cathode heating, the cathode sputters fast on the end thats glowing and it makes that lamp EOL within a few days. From a wattage stand point, Ive noticed no difference on the kill a watt for having lamps in series or wired normally

In my honest opinion these lamps are worth investing in a proper ballast like the one linked above
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Jan 19, 2019 at 11:38 AM Author: don93s
@xmaslightguy, interesting idea. I've never tried that with electronic ballasts but in the past I have tried lamps in series with magnetic slimline @625v output. However, the start-up was slower and the cathodes sputtered.

@Lightingguy, if they are wired normally on F32 ballast, the lamps are underdriven. They are made for 430ma and T8 are around 250ma. It may still work though, just dimmer.
xmaslightguy
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Jan 19, 2019 at 11:57 AM Author: xmaslightguy
@don93s:
Yep, I don't think magnetic has a high enough OCV for proper starting (once lit, running voltage will be around the same as a single long lamp, it just takes a higher starting voltage)
I've ran a pair of F17T8's in series inplace of a F32 on electronic, and that works fine Still starts instantly


@Lightingguy1994:
Like don93s said, wired normally the lamps will be underdriven...what I don't know is if they'll be underdriven by 'too much' where it'll start shortening their lifespan.
And yep, if running lamps in series on instant-start you do want to replace your EOL's fairly quickly.
What you see: little to no diff in watts with a pair of lamps in series/normal is exactly how it should work. 2x 2-foot lamps (for example) is 4 feet of lamp either way.

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

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