OP
Platonic Solid
Well-known member
CorrectTherefore, there is not a wiring scheme that will allow installation of single end and double end lamps in the same fixture ?
CorrectTherefore, there is not a wiring scheme that will allow installation of single end and double end lamps in the same fixture ?
I am rewiring some 4' fluorescent fixtures for use with 4' LED tubes. As per my research:
If I remove the ballasts, and rewire each fixture with non shunted tombstones such that each tombstone has 1 hot and 1 neutral, and each fixture side has 1 hot and 1 neutral, I can then safely use either single ended or opposing ended tubes, and I do not have to be end specific as to how I insert the tube into the fixture.
Is this correct?
You cannot use single end lamps with that setup. Double end or Universal (double/single/bypass/ballast compatible).
Therefore, there is not a wiring scheme that will allow installation of single end and double end lamps in the same fixture ?
Correct
wescat - I expect double end to become the most popular over time. Double end powered can use either shunted or non-shunted lamp holders. Single end must have non-shunted lamp holders. No idea which has greater market share at the moment (I design integrated LED fixtures = I don't use LED retrofit tubes). The Greentek lamp (link) from post #1 is universal = it can be wired single end or double end. Not sure how that fits into your market share question.
The 4000k option wasn't available a while back when I was looking. Only available relatively recently.Thank you Platonic Solid.
Is there a reason that the Greentek Energy Systems GT-T8-18W1200 BIXX 4000K lamp is omitted from your page 1 listing? Is it a "not recommended" lamp?
Also, be advised that the Greentek lamps are currently priced at $7.75 per.
While researching all of this, I found this very extensive linear LED lighting retrofit assessment done by the GSA: https://www.gsa.gov/cdnstatic/GSA_GPG_Linear_LED_Retrofit_Assessment-508.pdf
wescat - I expect double end to become the most popular over time. Double end powered can use either shunted or non-shunted lamp holders. Single end must have non-shunted lamp holders. No idea which has greater market share at the moment (I design integrated LED fixtures = I don't use LED retrofit tubes). The Greentek lamp (link) from post #1 is universal = it can be wired single end or double end. Not sure how that fits into your market share question.
To clearly answer #10 - I would select the lamp first and wire the fixture accordingly. If using a universal lamp and rewiring existing fixtures, I'd wire double end. Many of the new 4ft strip-light housings come standard single end wired and the retailers often offer double end wired for an additional fee. No point paying an additional fee for double end pre-wired housings when it's so very easy to change any single end housing to double end.
Trying to figure out which way to go on the lighting in my new shop with inside dimensions of 26'x30'x11'. Here are options I've been considering
#1 Lithonia IBE 22LM MVOLT 50K qty 4
(cost estimate with shipping $550 from Amazon)
#2 Lithonia IBE 12LM MVOLT 50K qty 6
(cost estimate with shipping $660 from Amazon)
#3 Maxlite LSS2XT8USE4803 qty 16
(cost estimate with shipping $740 from Bees lighting)
I'm leaning towards option #1 due to cost and install time. Just a little worried about shadowing. The space will be used for light wrenching. Will be using task lighting when needed. Has anyone installed high bay 22K lumen lights at 11'? Guessing closer to 10' when hung.
Does anyone know if the light suppliers in this thread do Black Friday deals? I need to place order for fixtures & tubes, have signed up to a few of their email lists but not gotten anything from them. Just wondering if I’ve been waiting around for something that don’t happen.

I got some of these bulbs and fixtures for my garage. LEDMyplace WEN-T8-4FT-18WF(4000K) & Maxlite LSS2XT8USE4803. I think they are too bright when I walk around, like I need a hat. Anything I can do or maybe some different bulbs?
Just have a 2 1/2 car garage with 10 foot ceilings. I only installed one light fixture so far.
Thanks
Let's clarify - You have a single 4ft 2-Lamp fixture with 2-2400 lumen bulbs (thus 4800 lumens total) in what I'll guess is a 30x24x10 space. You can't judge by a single fixture since your pupils can't properly adjust. If you permit your pupils to adjust to the dark area of the space and then look towards the single light source, it will be uncomfortable. This is why even light distribution is important,. Once you've evenly filled the space with the remaining fixtures, your pupils will adjust and it will not be uncomfortable.I got some of these bulbs and fixtures for my garage. LEDMyplace WEN-T8-4FT-18WF(4000K) & Maxlite LSS2XT8USE4803. I think they are too bright when I walk around, like I need a hat. Anything I can do or maybe some different bulbs?
Just have a 2 1/2 car garage with 10 foot ceilings. I only installed one light fixture so far.
Thanks
Since I can't possibly keep up with the demand for lighting layouts I went through the Visual Photometric Tool that is prelinked to Acuity Brand IES files and selected a similar output and wattage Lithonia fixture to the LumenGen/Metalux striplight combo on page 1 (link).
The closest I can find to the LumenGen/Metalux striplight combo which is Lithonia CLX L48 5000LM. The LumenGen/Metalux striplight combo is an affordable option for up to 10ft mounting height. Here is the link with the CLX L48 5000LM fixture preselected.
Now select "TOOLS" (at top left), then "Interior".
Insert dimensions of your area in the boxes.
Standard Ceiling,wall,floor reflectance is 70,50,20. If your ceiling and walls are unfinished wood, change reflectance to 20,20,20.
Insert 100fc or your desired level at workplane in the illuminance criteria box. (Industry standard for Automotive Maintenance and Machine Repair is 93fc @ 30" workplane.)
Note every time you make a change it takes a few seconds to update.
Near the bottom you can change fixture rotation and Suspension Length (distance of fixture from the ceiling).
See illuminance changes and fixture Qty. upper right corner.
Check "layout" box (middle right) to see fixture location dimensions.
If you need to mount fixtures higher than 10ft Lithonia has highbay fixtures similar to James, DivaLite,... you just have to load the most similar Lithonia IES file to the fixture you're considering via "Open" on the main Visual Photometric Tool tab. Then go to Lithonia Lighting/High Bay/IBH and search the specs. Fastest way is to download the fixture PDF and compare specs that way, then select the corresponding IES file.
Yes. I see the WEN-T8-4FT-18WF is out of stock.Is this (linked IES/tool) still applicable to the current lighting selections:
Maxlite LSS2XT8USE4803 fixture with either the LEDMyplace WEN-T8-4FT-18WF or Greentek Energy Systems GT-T8-18W1200 BIXX LED bulbs?
thoyer - 8ft is less popular and more expensive on a lumens/$ basis if dealing with actual 8' retrofit bulbs. 8ft strip lights that use 4 4ft bulbs are a good alternative. If you're interested in 8ft integral LED fixtures (not retrofit bulbs), that's certainly an option, but that tends to be pricey.