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F48T12 Slimline Industrial

F48T12 Slimline Industrial

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Got these recently from a friend because they were not working. One had bad tubes and the other had a bad ballast. Both working great now. They have no markings but are well made, with porcelain reflectors.

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Filename:20190102_185943.jpg
Album name:DieselNut / Other fluorescents
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Date added:Jan 02, 2019
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Date Time:2019:01:02 18:59:43
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Fluorescent05
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Zack


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Jan 02, 2019 at 07:06 PM Author: Fluorescent05
Cool! Normally they would be F40T12 or F48T12/HO in 4 foot versions.

Don't be fooLED, T8 IS the worst thing to do to a magnetic T12 fixture.

fluorescent lover 40
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Lights are awesome! :)


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Jan 02, 2019 at 07:30 PM Author: fluorescent lover 40
I know of 4 F48 Slimline turrets and 5 F48 troffers at a thrift store in use (neglected).

Current: US 120v 60hz
Power provider: Southern California Edison (SCE)

-Date decoder of some US lamps 1960-present.
-I'll save any vintage lamp... dead or alive! Smiley

xmaslightguy
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^homebuilt fixture


GoL ATL
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Jan 02, 2019 at 07:51 PM Author: xmaslightguy
Cool finds! Rare to see a F48 slimline anything

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

DieselNut
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jonathon.graves johng917 GeorgiaJohn
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Jan 02, 2019 at 08:11 PM Author: DieselNut
These really are rare. I only previously have a couple single under shelf lights and a 2x48 slimline strip.

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

Lightingguy1994
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Jan 02, 2019 at 09:49 PM Author: Lightingguy1994
Good score you got

These are the ones the highschools in my area had, except they are bi pin and can take a 3rd lamp. Now only one school still has them but they have been fitted eith LED tubes recently. They were previously T8 and T12 before
DieselNut
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jonathon.graves johng917 GeorgiaJohn
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Jan 03, 2019 at 06:28 AM Author: DieselNut
I have some similar to what you are talking about but in F40 preheat. Most of mine are two tube but I have a few three tube. They have sockets similar to these but with an integral starter socket and bipin of course.

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

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Jan 03, 2019 at 04:49 PM Author: streetlight98
Very nice John! And porcelain reflectors to boot.

To resist is to piss in the wind, anyone who does will end up smelling.

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Jan 03, 2019 at 06:07 PM Author: Powergroove
Excellent fixtures. Some good old Sylvania lamps would look good in them.

Keep government out of the lighting industry.

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Jan 03, 2019 at 06:26 PM Author: streetlight98
F48 slimline lamps are hard to find around here. I can't find many places that sell them. The local Durfee TrueValue Hardware here sells new GE F48/CWs but they're like $12.99 a pop. A little steep IMO, especially since the lamps are only rated 9000 hours compared to the much-cheaper F40T12s that are rated for around 20000 or more life hours. They are cool looking though. I only have one slimline fixture, a Day-O-Lite F48T12 two lamp strip light. Came with Sylvania EcoCrap tubes. Thankfully they've got low hours since my only other pair is a semi-vintage pair of NOS GEs with the meatball logo and "SLIMLINE" in serif font.

To resist is to piss in the wind, anyone who does will end up smelling.

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Jan 03, 2019 at 07:15 PM Author: Lightingguy1994
I agree that $12.99 a tube is steep, you may just need to set aside some cash and take the plunge for a pair. The CW GE sounds like a good tube and I would still cough up the dough and get some before they are gone forever.

Why are slimline tubes low lifespan anyways ? Is it not the same electrode as a F40T12, but just with no heating voltage? Im sure with a good ballast and care when operating the light, they can pull more hours than 9000
Powergroove
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Jan 03, 2019 at 07:19 PM Author: Powergroove
Instant start takes its toll. 9000 hours is rated at 3 hours per start. These easily last 20000 hours plus when burned longer than 3 hours per start.

Keep government out of the lighting industry.

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Jan 03, 2019 at 07:23 PM Author: Lightingguy1994
Oh i forgot about that, i never usually think of instant start when it comes to magnetic power lights. I would still get those bulbs and use them in a fixture that gets long hours per start. Tubes like this at 48 inch are not sold in stores in my area, only the F96T12 and T8 are found easily in all common colours and at 75w. The HO versions with the RDC cap is also widely sold here with F48 60w alailable
streetlight98
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Jan 03, 2019 at 07:26 PM Author: streetlight98
They're designed for instant-start ballasts, and instant starting reduces life but I would have thought the lamp was specifically designed to handle instant-starting. Unsure why the rated life is so low. Some smaller bi-pin lamps are only rated around 9000-12000 hours as well. Makes sense for a light that only runs three hours a day (8 years for 9000HR lamp) but for a light operated all day long in a commercial application like virtually every slimline is, assuming 12 hours a day in a warehouse or retail store that's only a two-year life. Compared to a 20000HR F40T12 that should last 4.5 years running the same amount of time. But then again, if the rated life assumes three hours a start, running the slimline for 12 hours a day rather than three could drastically increase its life. I would think starting up is the hardest on the lamp compared to when it's running.

EDIT: ^ Powergroove beat me to it.

To resist is to piss in the wind, anyone who does will end up smelling.

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Jan 03, 2019 at 07:29 PM Author: Lightingguy1994
Ive watched videos of abandoned places with power left on for like 30 years and half the lights still working so it seems that way for sure.
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Jan 03, 2019 at 08:03 PM Author: streetlight98
The grocery store I worked at between 2015 and 2017 had a drop ceiling with three lamp T8 troffers. The ceiling was torn down immediately after I started working there, revealing an oldschool 12" tile ceiling with continuous rows of F40T12 strip lights, most with lamps in them and a few still working. Apparently when they added the drop ceiling and troffers when they remodeled the store in the past, the old lights never were disconnected and were left to run 24/7. The oldest lamps I could recognize were pre-alto Philips F40CWs with the shield logo. There could have been older tubes though. Most were EOL but maybe 1/4 of the fixtures at least had the "primary" tube glowing.

Some fixtures were missing lamps and some even missing channel covers. The ones missing channel covers had MC whips coming out the bottom to hit a "night light" troffer that would run 24/7, so when they turned off the sales floor lights those few random troffers would stay on. IIRC, there was one troffer in the middle of each aisle and then a couple random ones along the deli cases in the back of the store and a couple over the cash registers. Maybe a dozen total.

But when they ripped out the drop ceiling I was amazed at the fact that they A, left the old lights hooked up to run 24/7 (presumable with all-working lamps back in the day! ) and B, hacked up those ones to jump out the troffers. At the very least I'd expect them to remove the lamps from the old fixtures and the ones they want to jmp power out of, drill a 7/8" hole in the channel cover and connect the MC to that, rather than fly it out of the open fixture like that (the MC was zip-tied to the fixture at least; the weight of the cable wasn't on the wire nuts but still!).

Anyway, the original tile ceiling was ripped out too, revealing the bare framework of the roof, which was spraypainted a flat charcoal gray. The new lights were LED low-bays that were wired with EMT and twist-lock plugs. They were actually very nice lights. 3000K, no glare (the LEDs were high up in the reflector out of sight unless you look directly up) and no failures the two years I was there. Been back since and still no failures, though some of the LED troffers over the deli and prepared foods departments have failed as well as some of the LED tube retrofits in the shelf lights. They do a good job maintaining the shelf lights though. I only knew there were failures because when I worked there I stumbled upon a trash bin with half a dozen tubes marked with an X in sharpie. I never actually even saw a dead LED tube on the sales floor with my own eyes. It's a locally owned small chain, and the owners are big on appearance so anything that isn't working right usually got fixed right away.

To resist is to piss in the wind, anyone who does will end up smelling.

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jonathon.graves johng917 GeorgiaJohn
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Jan 03, 2019 at 08:55 PM Author: DieselNut
Sounds like my local Ingles stores. I tis a southeast regional chain and they are all very well maintained, with f96T8 3500K tubes and a few 2x2 troffers in the pharmacy and beer/wine sections. They also have F32T8 uplightng around the produce, deli, meat and dairy sections.

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

Fluorescent05
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Jan 04, 2019 at 09:54 PM Author: Fluorescent05

I know of 4 F48 Slimline turrets and 5 F48 troffers at a thrift store in use (neglected).

Do you have a picture of the F48 troffers?

Don't be fooLED, T8 IS the worst thing to do to a magnetic T12 fixture.

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T12


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Jan 10, 2019 at 06:58 PM Author: veryhighonoutput
Wow nice find john!

T12/ t17 there's a reason they made heavy magnetic ballasts

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jonathon.graves johng917 GeorgiaJohn
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Jan 11, 2019 at 10:00 AM Author: DieselNut
Thank you sir! I had my eyes on these for years and gave him a good working 2x96 slimline fixture to put in place of these. It worked out better because nearly all the lights in his aunt's house (5 2x96 slimline in the garage and 2 2x96 slimline in another shed and 9 2x96 slimline in his shop) use the same tubes now.
F48 troffer? I would love to see that too!

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

Fluorescent05
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Jan 13, 2019 at 06:43 PM Author: Fluorescent05

These really are rare. I only previously have a couple single under shelf lights and a 2x48 slimline strip.

Can you post a picture of the under-shelf lights?

Don't be fooLED, T8 IS the worst thing to do to a magnetic T12 fixture.

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