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GE F48T12 CW HO High Output Lamps

GE F48T12 CW HO High Output Lamps

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Here's an interesting sight at a local Lowes. These GE lamps appear to be made on Philips tooling in the Salina, KS plant. The date code format (7L), the thick phosphor coating, and the grey ink in the etch all make me wonder. I've heard that since the closure of Sylvania's fluorescent plant in Versailles, KY, that Sylvania has been sourcing some lamps from Philips. I'm patiently waiting for Lowes and Home Depot to start putting these fluorescents on clearance before I stock up.

This might be an obvious question: Would a standard F48T12 ballast run these 60 watt high output lamps?

IMG_5601.JPG F27550D4-7074-47C8-B72D-F630E7A3D575.jpeg IMG_5144.jpg IMG_5141.jpg

Light Information

Light Information

Manufacturer:Philips for General Electric
Lamp
Lamp Type:F48T12
Base:T12
Fixture
Location:South Carolina
Electrical
Wattage:60 Watts
Voltage:120 Volts
Current:60 Hz
Optical
Color Temperature:4100K
Color Rendering Index:62 (Mediocre)
Physical/Production
Factory Location:USA
Fabrication Date:7L, November 2017
Application/Use:General purpose fluorescent lighting for stores, garages, kitchens, or offices

File information

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fluorescent lover 40
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UCi55A3hASj7xOZ1eTRO1Jvg
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Jan 27, 2020 at 09:43 PM Author: fluorescent lover 40
If the ballast you're talking about is slimline, no, it won't. You need a F48T12 HO ballast as slimline lamps are instant start and HO lamps are rapid start.

Good quality things are awesome. Cheaply made things are not.

CEB1993
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Camden


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Jan 27, 2020 at 09:53 PM Author: CEB1993

If the ballast you're talking about is slimline, no, it won't. You need a F48T12 HO ballast as slimline lamps are instant start and HO lamps are rapid start.


Thanks! My ballasts are rapid start so it sounds like these would work with my current equipment. Here’s a picture of my Advance rapid start ballast:

https://www.lighting-gallery.net/gallery/displayimage.php?album=4766&pos=28&pid=162374

Philips DuraMax and GE Miser forever!  Classic incandescents are the best incandescents!

Stop the lamp bans!

fluorescent lover 40
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UCi55A3hASj7xOZ1eTRO1Jvg
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Jan 27, 2020 at 09:56 PM Author: fluorescent lover 40
If that's what your using, it won't work at all. It may fire up but will be bright as a nightlight. You need a proper HO ballast, rated for "F48T12 HO" lamps. The ballast will be 3x bigger than that. Here is an example.

Good quality things are awesome. Cheaply made things are not.

CEB1993
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Camden


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Jan 27, 2020 at 10:35 PM Author: CEB1993

If that's what your using, it won't work at all. It may fire up but will be bright as a nightlight. You need a proper HO ballast, rated for "F48T12 HO" lamps. The ballast will be 3x bigger than that. Here is an example.


Thank you! I understand now. I’ve never seen a ballast for high output lamps, that’s definitely good to know! I really appreciate everyone’s advice as I learn more about these specialty fluorescent lamps

Philips DuraMax and GE Miser forever!  Classic incandescents are the best incandescents!

Stop the lamp bans!

xmaslightguy
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zzz


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Jan 27, 2020 at 10:47 PM Author: xmaslightguy
Actually yes a F48T12 slimline ballast WILL run these...but they'll run at 40w (and the lifespan will be reduced due to instant-starting)
If you ran them on a F40T12 RS ballast (which also WILL work) they'd also be running at 40w (and unlike the slimline ballast, no reduced lifespan)
...so in either case you'd just have a normal-brightness F40 light ( and yes I have tested it )

Its All For The Christmas Lights...
And A Good Summer Thunderstorm!

fluorescent lover 40
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UCi55A3hASj7xOZ1eTRO1Jvg
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Jan 27, 2020 at 11:15 PM Author: fluorescent lover 40

Actually yes a F48T12 slimline ballast WILL run these...but they'll run at 40w (and the lifespan will be reduced due to instant-starting)
If you ran them on a F40T12 RS ballast (which also WILL work) they'd also be running at 40w (and unlike the slimline ballast, no reduced lifespan)
...so in either case you'd just have a normal-brightness F40 light ( and yes I have tested it )

Thanks for the info! Remember reading it somewhere. Just forgot where.

Good quality things are awesome. Cheaply made things are not.

xmaslightguy
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zzz


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Jan 28, 2020 at 12:13 AM Author: xmaslightguy
@fluorescent lover 40:
What you read there (wherever it was) they could mean by "it won't work" is that you won't get the HO/60w output from it - which is true, there's simply no way to do it with a 40w magnetic ballast (atleast no safe way!)
On a F40 preheat ballast, it truly won't work at all, in that case it'll just blink like an EOL lamp.

With a pair of simple choke ballasts on 240v you may be able to run them in parallel (basically what'd be like overdrive wiring on a F40) & come somewhere in the range of 60w? ...I don't have the parts to try it LOL (and I'm not sure magnetic divides up the same way electronic & overdriving does - 2x overdrive on electronic doesn't double, it gives between 1.5x to 1.75x)

Its All For The Christmas Lights...
And A Good Summer Thunderstorm!

rjluna2
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Robert


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Jan 28, 2020 at 07:01 AM Author: rjluna2
Camden, the current rating for these HO are 800 mA. These slimline uses less current for the light output.

Pretty, please no more Chinese failure.

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