Florescent Lighting Bans?

[MossRoad]

Everybody disparages lawyers.... until they need one.

 

[Suburban Plowboy]

Clients are almost always the slimiest people in the courtroom.

 

[JTKub]

GE and Sylvania make up the bulk of what I have.

I’m a fan of T8 and we were the first major build in the city all T8 and compact Florescent.

In 30 years only one single compact Florescent ballast went bad…

In 30 years had a few short lived ballasts the first year and then the sweet spot for 15 or so years and the to now 3-4 ballasts a month..

I’m guess my medical halogen surgical bulbs will soon disappear…

I’m looking at $140k to replace with LED in 6 operating rooms…

People wonder why medical costs so much?

We had 1000's of 4ft T12 and T8 fixtures at the plant I work at a lot of 8ft T12s as well. Most of this lighting is never turned off as the plant operates 24/7/365.

Loosing a T8 ballast was rare. I can think of maybe one or two in the 28yrs I've worked there. The T12 fixtures was another matter. Constant ballast issues.

We could get maybe 3-5 years out of 4ft T8 lamps in continuous operation. Longer in office environments. Shorter out in the plant.

Mostly everything is converted over to blinding LED now, including all the high pressure sodium high bay fixtures and roadway lights. I don't care for the glare from most of them. They give off an insane amount of "light" per watt, but it ain't pretty IMO.

The most amazing thing I've seen at our plant is some old mercury vapor lighting with holophane hoods/reflectors. There were installed in the late 1940s and still light up with ancient US made Westinghouse MV lamps in them.

 

[DarkBlack]

I’ve done multiple large upgrade lighting projects to LED, using the help of utility company reimbursement programs. Probably aren’t as many anymore, but I would still check. Combined with the energy savings, the payback is relatively short.

 

[DarkBlack]

I put those thousands of used T8’s on Craigslist and some other local media for free. I guy from a couple towns over was happy to take them. He used them for some school project

 

[rontaki]

With LED lighting, beware of low color rendition index (CRI) and/or too high of a color temperature. Often, in order to get a high lumen-per-watt number, the CRI is sacrificed and the color temperature in the blinding blue light territory. I prefer the warmer light output, but not too yellowish like some warm LEDs can be. The technology is still progressing.

 

[ning]

Fluorescent lighting is surprisingly efficient - typically 50-100 lumens per watt.
Of course, LEDs are more like 130 lumens per watt, so they're even more efficient.
One source gives 21.5W LED retrofit for T8 at 172 lumens per watt.
Incandescent lighting is more like 15 (5-20 range).

Personally I get eye strain and headaches in fluorescent-lit spaces that I haven't noticed elsewhere. I suspect my pupils don't react to the wavelengths so my eyes let in too much light and get overloaded, but it could also be the 60Hz flickering which is pretty obvious. I've replaced CFLs and T8s while they're still otherwise functional because of color temp and flicker; when possible I've used the "remove/bypass the balast" type replacements but I understand not doing that to replace an entire hospital's lighting...

 

[MossRoad]

Fluorescent lighting is surprisingly efficient - typically 50-100 lumens per watt.
Of course, LEDs are more like 130 lumens per watt, so they're even more efficient.
One source gives 21.5W LED retrofit for T8 at 172 lumens per watt.
Incandescent lighting is more like 15 (5-20 range).

Personally I get eye strain and headaches in fluorescent-lit spaces that I haven't noticed elsewhere. I suspect my pupils don't react to the wavelengths so my eyes let in too much light and get overloaded, but it could also be the 60Hz flickering which is pretty obvious. I've replaced CFLs and T8s while they're still otherwise functional because of color temp and flicker; when possible I've used the "remove/bypass the balast" type replacements but I understand not doing that to replace an entire hospital's lighting...

Just an FYI...

Fluorescent lights flicker at twice the HZ of the input, so in the U.S., that's about 120HZ.

Maybe this?

Why does artificial light hurt my eyes? Is it Irlen Syndrome? - Irlen

Understanding Irlen Syndrome: Can Fluorescent Lights Affect Us and Why Does Artificial Light Hurt Our Eyes? Welcome to the nuanced understanding of Irlen Syndrome, a perceptual processing disorder that affects the way the brain interprets visual information. At Irlen.com, we explore the complex...

irlen.com

 

[WinterDeere]

Clients are almost always the slimiest people in the courtroom.

On one side of the aisle, anyway. On the other is usually someone who's just been broadsided.