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Thread: T4 T5 Fluorescent Fixtures

  1. #1

    Default T4 T5 Fluorescent Fixtures

    Anyone have any experience with the slim T4 or T5 fluorescent fixtures?

    On paper, I'm leaning to T4s. It seems T4s have really caught on in Europe but are still quite rare here in the US.

    Shopping for fixtures, it appears most are essentially the same with little to diffentiate them.

    Regarding tubes, I've seen various discussions which hint that all the major brands of bulbs (GE, Philips, Sylvania) are all manufactured by the same Chinese plants. Anyone know if this is true? I've had bad luck with off brands of CFLs (specifically Lights of America - terrible life) compared to mainstream such as GE.

    Thanks for the input!

  2. #2
    Flashaholic* LumenHound's Avatar
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    Default Re: T4 T5 Fluorescent Fixtures

    I don't know about the Chinese plants.

    Philips has a lamp plant in Poland that employs 3600 people. Are there any lighting factories in China this big?

  3. #3
    Flashaholic*
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    Default Re: T4 T5 Fluorescent Fixtures

    I wanted to check out T5 lighting but finding T8 is hard enough... I saw one T5 fixture, but it was meant for a specific purpose (bathroom) and had a small tube and was expensive.

    T5 fixtures seem to be expensive on the web as well, what prices are you looking at?

  4. #4

    Default Re: T4 T5 Fluorescent Fixtures

    I went with t8's in my fishtank even though they are kind of old school for that application. But you can use $3 bulbs and buy them any day of the week vs ordering $ shipping 4' glass bulbs which seems stupid. Finding fixtures with polished AL reflectors is a nice feature that keeps on giving. It helps put out a lot more light and you only have to pay for it once. I still want to upgrade to t5 HO some some point but just for that slight increase in efficiency to put more light in the tank. Under normal circumstances is that worth it? It seems like the avg person is happy with cheap, cheap lighting.

  5. #5

    Default Re: T4 T5 Fluorescent Fixtures

    This may not be what you're looking for, but Ideal-Lume are the best T5's I've seen. The ballasts emit no hum and the color is spot-on perfect. After getting one for my home theatre, I wouldn't buy any other brand. I've been spoiled.
    Ray
    Good people need to be there for each other. It's the only way to stay sane in a sometimes insane world.

  6. #6
    Flashaholic* yuandrew's Avatar
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    Default Re: T4 T5 Fluorescent Fixtures

    My Lowes carries some T5 tubes in the 24, 34, and 44 inch lengths with 14, 21 and 28 watts respectively. If you look around in the fluorescent section of their lighting display, there are a couple T5 fixtures but not that many. Two of them appear to be undercabinet fixtures and one was a small overhead light using two 14 watt 24 inch T5 tubes. The T-8, however, are more abundant in Lowes.

    You could try buying yourself a T5 tube and cannabilize a compact fluorescent lamp ballast to run it (I have CFL base with a broken spiral laying in my drawer which I'm planning to use for such purpose.) The lampholders themselves are difficult to find though; I'll have to check LightBulbs ECT in Montclair since they carry all sorts of obscure speclity bulbs and electrical supplies.

  7. #7
    Enlightened
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    Default Re: T4 T5 Fluorescent Fixtures

    For my small 20g tank, I went with 24" T6 bulbs in a hacked up T8 shoplight I got from home depot. The bulbs fit the T8 sockets and I got them from www.bigalsonline.com

  8. #8

    Default Re: T4 T5 Fluorescent Fixtures

    Can anyone explain the difference between T4 and T5?
    I've used both and they seem almost identical.
    Thanks

  9. #9

    Default Re: T4 T5 Fluorescent Fixtures

    The difference is the diameter of the tube (in eighths of an inch):

    A T4 is 4/8's inches (1/2") in diameter.

    A T 5 is 5/8" in diameter.

  10. #10
    Flashaholic*
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    Default Re: T4 T5 Fluorescent Fixtures

    T4? Is this thread about linear of CFL's? I can't find any T4 linear lamps on GE's site...
    Jim

  11. #11

    Default Re: T4 T5 Fluorescent Fixtures

    Quote Originally Posted by brickbat View Post
    T4? Is this thread about linear of CFL's? I can't find any T4 linear lamps on GE's site...
    You likely won't. T4's and T5's are very popular in Europe but seemingly slow to catch on in the US.

    They are very energy efficient, obviously compact and a great lighting solution.

  12. #12
    BVH's Avatar
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    Default Re: T4 T5 Fluorescent Fixtures

    Codeman, I also have the ideal lume for bias lighting behind my plasma. It really does relieve eye strain and doesn't mess with the colors of the TV.

    I was looking at T4 & T5 for my garage but decided that T8's were the best fit. I went with Lumicrome, 5000K, 96 CRI tubes. I really like them.
    WWII 60" Anti Aircraft Carbon Arc (Sold), Short Arcs: 1.6KW NightSun, 1KW VSS-3A, .8KW TrakkaBeam, 600 Watt M-134 Gun Light, 500 Watt X-500-14s, 500 Watt Starburst, 300 Watt Locators, Megaray, 150 Watt Set Beam & Communicator, Maxabeam Gen3, LarryK14@52V

  13. #13
    Flashaholic*
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    Default Re: T4 T5 Fluorescent Fixtures

    Quote Originally Posted by TheWalkman View Post
    You likely won't. T4's and T5's are very popular in Europe ....
    I'd like to read more about the T4 lamps. I checked Philips' UK site - nothing. Who makes these? All I see are a few Chinese ones...
    Jim

  14. #14

    Default Re: T4 T5 Fluorescent Fixtures

    No, OSI, G-E, Philips do not use the same plants. In fact, G-E makes there lamps in CAN, Hungry, and US.

    T-4 setups aren't very common because the T5s are just fine thus far. T-4s are only available from 'no-name' import companies. Even then, good luck finding a ballast.

    Be careful when choosing T5s as the H.O. version look identical, but have different output (of course). F28T5s are the regular 4' lamps, but the F54T5s are the H.O. and aside from the wattage designation look exactly the same. T5HO's are not like T8/T12s where there are different pins/lampsholders.

    What is the purpose of your lamp choice? Generally, T5s perform better in higher ambient temperatures in comparison of T8s. Whereas T8s perform better in COlder temps.

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