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Dumpster Driving Pays off Again!

Dumpster Driving Pays off Again!

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A duplicate of literally the first lamp I ever found once I started hitting up my local transfer station every weekend for tubes, though that one was literally NOS in sleeve! (I'd also found two Ecolux versions that same trip).

This one wasn't in the bulb bin. I also manually check each dumpster (not so much expecting tubes, but other useful items, being a college student on a limited budget) and found three of these and a F32T8/741 Alto. Two were in the packaging for GE 'Active Spaces' 6500K. This one looked serviceable (the other two didn't, I held them up to direct sunlight and they definitely looked spent) so I took it, also placing the other two spent ones in the hazmat bin. (I feel the very least I can do as a lowly dumpster diver is at least organize the messes I sort through, and I AM a prominent of not polluting the environment, despite still using energy sucking T12s; on a side note it bothers me how much recyclable cardboard I see in the waste dumpsters; if I ever need cardboard I know where I'm going!)

One major thing really noticeable with these full mercury tubes is how they fire up at full brightness or nearly so, even immediately after being brought indoors from subfreezing or even single digit temperatures. This one fired right up on preheat after being brought inside from 20F. That Alto I mentioned earlier sure started dim.

I also forgot how flickery Chroma 50 was, though this one wasn't rectifying (It did do that on a later starter 'misfire').

When fired up/tested in the preheat fish tank light, with a daylight F15T8 at the other end, I literally thought maybe this lamp was a misprint and really a SP41, I kid you not! Chroma 50 feels like Daylight to someone who's used to Cool White like I once was, but after surrounding myself with daylight I realize it's a much more pale color.

This one definitely has some hours. The other end has about 1.5" of darkening, but much of that actually burned off in the 5 minutes or so I left this lamp running to make sure it wasn't spent. This era of GE will get quite a bit of blackening before they finally quit on preheat or rapid start, and on electronic instant start I had one of this exact lamp take hundreds of hours more to finally die; I was still using it as general lighting!

I'd wanted another Meatball etch Chroma 50 ever since that lamp that took forever to die, but I've since found I like Daylight more, so this one went in a case of lamps I'm putting together to give to a fellow Lighting Gallery member, Icefoglights.

Can someone actually date this? and tell me which plant this lamp was manufactured at? I know this style of GE etch is harder to decipher, at least in the Lighting Gallery community.

IMG_0734.JPG IMG_0714.JPG IMG_0716.JPG IMG_0713.JPG

Light Information

Light Information

Manufacturer:General Electric
Model Reference:F40C50
Lamp
Lamp Type:Linear fluorescent
Base:G13/medium bipin
Shape/Finish:T-12
Service Life:20,000 hours on rapid start, 15,000 hours on preheat
Fixture
Ballast Type:Preheat or Rapid Start
Electrical
Wattage:40w
Optical
Lumen Output:2250 initial
Color Temperature:5000K
Color Rendering Index:90
Physical/Production
Dimensions:1.5" X 48"
Factory Location:USA
Fabrication Date:'92-'02
Application/Use:High CRI alternative to halo phosphor cool white or daylight; color matching

File information

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Filename:IMG_0716.JPG
Album name:ace100w120v / Florescent Tubes
Keywords:Lamps
File Size:311 KB
Date added:Nov 13, 2016
Dimensions:2465 x 1848 pixels
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URL:http://www.lighting-gallery.net/gallery/displayimage.php?pos=-127592
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don93s
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Nov 13, 2016 at 06:23 PM Author: don93s
Nice find. I have one or two similar to this as well somewhere. Indeed, if you are used to /Daylight, it will appear like Cool White. Perhaps I'm not as visually sensitive, but I haven't noticed any extra flicker in these compared to other 5000k brands.
ace100w120v
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Nov 13, 2016 at 06:30 PM Author: ace100w120v
/950 is flickery in general, but I would swear that Chroma 50 is worse than Sylvania Design 50. I didn't think the C50/daylight was that much of a difference, but boy was I wrong! I guess it's like comparing warm white to cool white, it was a surprise.
don93s
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Nov 13, 2016 at 06:55 PM Author: don93s
I guess when you think about it, a jump from 4100 to 5000k isn't as big as from 5000 to 6500k (900 vs. 1500). Interesting thought.
ace100w120v
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Nov 13, 2016 at 07:05 PM Author: ace100w120v
Definitely! Here's how it went for me, chronologically

-Cool white, Cool white Plus

-Warm White, which by itself with no other light sources wasn't awful, I had a bunch of GE warm white "Mainligter" lamps (trash finds too actually, several dozen of them) to burn through.

-Lots of warm white got to be too much, so I went to Cool White in the same fixtures.

-I finally got enough 5000K (Sylvania Design 50 and GE Chroma 50) to have a single 3 lamp fixture with all 5000K, I still remember the first time I did that and turned all the other lights off, it was quite the change!

-Now on to Daylight.
ace100w120v
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Nov 13, 2016 at 07:08 PM Author: ace100w120v
I should also mention I really think it's a ballast/ballast factor thing, how fluorescent colors look. For Chroma 50, on HPF full power rapid start, they're quite pleasant, but here this is LPF preheat...not driven as hard. Even right now as I type, I'm running a Philips Daylight Deluxe (current issue version, 6500K 90 CRI) and it appears more gray and pale compared to two more identical lamps running in a cheap LOA electronic workbench light over where I'm typing this, which are driven a bit harder it seems and also aren't flickering on magnetic, the color is much more blue and rich.
don93s
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Nov 13, 2016 at 07:19 PM Author: don93s
I too have noticed lamps can have a more pale color when under-run. I usually prefer full power!
ace100w120v
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Nov 13, 2016 at 07:24 PM Author: ace100w120v
Me too! However, I do have this fish tank light and a 2001 Metalux 1X40 strip in use as indirect lighting, and the low-power ballasts and deluxe daylight lamps are soft and easy on the eyes.
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Robert


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Nov 13, 2016 at 07:25 PM Author: rjluna2
Seems to be newer model to me

I know you have already seen mine posted at General Electric Chroma 50.

Pretty, please no more Chinese failure.

ace100w120v
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Nov 13, 2016 at 07:39 PM Author: ace100w120v
As for newer models, there's a couple few iterations after this: One with the (Hg) symbol, and then Ecolux. After that, it became 'Sunshine', which was a SPX50 and Chroma 50 mixture, and now it's CX50 I think. I should buy a current one just to compare.
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Nov 13, 2016 at 10:00 PM Author: streetlight98
I think CX50 is what I have. 87 CRI and 2900 lumens. Whatever kind I have, I love them very much. Great lamps. No flicker and nice rich color. Not too blue and not too warm. It's my perfectly balanced lamp lol. I just wish I could get them by the case instead of by the $9.98 twin packs at Lowe's. They get expensive at ~$5 a lamp. I have six currently. I have four of the C41s, which are basically an improved-color CWX. Same lousy 2100 lumens but not the nasty pinkish-purple color of typical CWX. Nice lamps but pathetically dim. I also have one pair of GE SP35 F40T12s and they're like 3200 lumens a piece. I'd like to see T8 beat that! If they wanted to, they could probably make a 3500 lumen F40T12. And if F32T8s used traditional CWX phosphors they'd be pathetically dim.

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ace100w120v
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Nov 13, 2016 at 10:04 PM Author: ace100w120v
I'm curious to compare the, now I might have to go buy a CX50. C50 is pretty nice on its own, though a little purplish-pink but blue, if that makes sense. This photo was a pretty accurate depiction of what GE Chroma 50 looks like in real life.
streetlight98
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Nov 13, 2016 at 10:19 PM Author: streetlight98
Yeah isn't Chroma 50 basically a nicer version of CWX, with the purple tinge? I've actually never seen one in person though. Only DSGN50, CX50, and Philips NATURAL LIGHT 50 (or whatever those 5000K Philips I own are called lol). The CX50 is my personal favorite hands-down. The Philips actually takes choice two because they're less flickery and the phosphor isn't grainy. I like Sylvania lamps but their fluorescents tend to have grainy phosphor and tend to be flickery at startup. Not just the DSGN50s but their lamps in general. I used to be a big Sylvania fluorescent fan but not so much anymore. GE is my "Fluorescent Fave" lol. Sylvania lamps seem reliable for the most part but they're better in fixtures with diffusers lol. CCRI has Sylvania tubes and a couple have gone starved. The Sylvania F17T8s at CCRI are pretty bad. The fixtures are from like 2012/2013 and around 1/3 of the F17T8s are dead. Only one or two F32T8s are dead in the building and a couple F25T8s are dead. But the F17T8s don't last. The Philips ones don't last in my basement fixture either. And the GE F17T8s never lasted in that American Fluorescent wrap I had in the laundry room (which had been installed in the basement of my grandpa's apartment until I installed the F32T8 troffers; now it's installed in their basement with one remaining SP35 F17T8 from when I owned it and one F15T8/24" appliance lamp that my grandma bought at HD (Philips Alto F15T8/CWP but 24" long). I told her to bring one of the old bulbs with her and have one of the guys there pick out the replacement for her and the guy must not have been too bright. Oh well... I'm curious how long they'll last on IS...

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ace100w120v
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Nov 13, 2016 at 10:40 PM Author: ace100w120v
Chroma 50 is a 5000K, 90 CRI deluxe halo phosphate. Basically the GE version of Sylvania Design 50, but noticeably more purple. You'd have to see one lit in person I guess.

My university uses GE F32T8 4100K lamps, and a bunch of 28w Sylvanias. And yeah, those F17T8s die fast, especially on those darn motion sensors.
Lightingguy1994
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T12 are and always will be my favorite bulb


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Dec 26, 2016 at 03:37 PM Author: Lightingguy1994
I just picked up some Sylvania F40 5000K tubes brand new the other day (from restore but never used in packs)
See here in my gallary http://www.lighting-gallery.net/gallery/displayimage.php?pos=-129026

Sylvania seems to be calling these Daylight full spectrum They come in packs of two. They are decent quality and work very nice with no abnormal flicker. They also appear to be Canadian made with black etching
ace100w120v
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Dec 26, 2016 at 05:41 PM Author: ace100w120v
Saw those pics. Definitely kind of a weird name. The sleeves these came in called the lamp 'Sunshine'.
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