Are T12 lamps still available?
High-output and high-CRI T12s are still manufactured today, but production is down. Second, magnetic ballasts – which conventional T12s require to run – are no longer manufactured in the U.S.
What does T12 mean?
A T12 lamp (on the left in the figure below) is therefore twelve-eighths of an inch, or one-and-one-half inches (3.81 cm), in diameter. A T8 lamp (on the right in the figure below) is eight-eighths of an inch, or one inch (2.54 cm), in diameter.
Which is better T8 or T12?
The smaller the lamps the more energy efficient they are. T8 bulbs use about 35% less electricity to produce the same amount of light as a T12. For some applications, one T5 bulb can replace two T12 bulbs, providing even greater energy savings (a process called “de-lamping.”)
Can you use T8 LED bulbs in a T12 fixture?
T8 tubes are simply 1 inch in diameter versus the 1.5 inch diameter of T12 tubes. In an effort to make LED tube lights compatible with the internal dimensions of most fixtures, you will find that most LED tube lights feature a T8 or 1 inch diameter. They can indeed be used in T12 fixtures.
Can you use a T12 bulb with a T8 ballast?
As far as safety is concerned, you can exchange them. If you place T12 tubes in a fixture with a T8 ballast, you will wear out the ballast and have to replace it. If you place T8 tubes in a fixture with a T12 ballast, then the tubes will have a shorter life due to a higher current through the tube.
What does T12 mean in fluorescent bulbs?
The T12 is an older generation fluorescent bulb that generates light through electromagnetic induction , which is considered less efficient method of creating light compared to that of newer electronic based circuits.
What is T12 bulb?
The T12 is an older generation fluorescent bulb that generates light through electromagnetic induction, which is considered less efficient method of creating light compared to that of newer electronic based circuits. Like the T5, the T8 tube creates light through advanced electronic circuits…
What is a Philips bulb?
Philips compact fluorescent light bulbs ( CFL ) are an affordable, energy saving option for lighting your home or office. CFL bulbs combine the energy efficiency of fluorescent lighting with the convenience and light quality of incandescent bulbs.
What is Philips Lighting Company?
Koninklijke Philips N.V. (literally Royal Philips, stylized as PHILIPS) is a Dutch multinational conglomerate corporation headquartered in Amsterdam, one of the largest electronics companies in the world, currently focused in the area of healthcare and lighting. It was founded in Eindhoven in 1891 by Gerard Philips
Can I replace T12 lamps with T8?
The main difference between T8 and T12 tubes is the tube’s diameter. T12 tubes are 1.5″ in diameter while T8s are just one inch. All other things—socket sizes, lengths, distance between pins—are the same. T8 LED tubes won’t fall out if you try to install them in a T12 fixture—they’ll fit just fine.
What does T12 mean in lighting?
What lengths do T12 bulbs come in?
Common tube ratings
| Tube diameter in 1⁄8 in (3.175 mm) | Nominal length | Nominal power (W) |
|---|---|---|
| T12 | 4 ft (1,219 mm) | 40 |
| T12 | 5 ft (1,524 mm) | 65, 80 |
| T12 | 6 ft (1,829 mm) | 75, 85 |
| T12 | 8 ft (2,438 mm) | 125 |
How long do T12 bulbs last?
Typical lamp life for a fluorescent bulb is about 20,000 hours, but this can degrade as a consequence of frequent switching (turning on and off). Burning life is extended if lamps remain on continuously for long periods of time.
Why can I still buy T12 bulbs?
These light fixtures were probably no longer made, and were in need of being changed or upgraded. T12 linear fluorescent lamps happen to be one of those bulbs. In response, Congress made legislation stating that T12 linear fluorescents and other inefficient lighting technologies would no longer be manufactured.
How do I know if my fixture is T8 or T12?
If no markings are available, the size in diameter of the tube is the easiest way to determine the type you have installed. T8 tubes are 1-inch in diameter and T12 tubes are 1 1/2 -inch.
Which is better T8 or T12 bulbs?
The smaller the lamps the more energy efficient they are. T8 bulbs use about 35% less electricity to produce the same amount of light as a T12. T5 bulbs use about 45% less energy than T12s.
Which is brighter T12 or T8?
The Standard T12 lamp produces 2,650 initial lumens per lamp. The standard T8 produces 2,800 initial lumens per lamp, 6% brighter. But the standard T12 lamp produces 2,300 design lumens and the T8 produces 2,660 design lumens. Design Lumens are the average lumen output of the lamp after 40% of its rated life.
Is F40 same as T12?
This is calculated in 1/8″ increments. This means a T8 lamp is 8/8ths of an inch in diameter, or 1 inch. A T12 is 12/8ths of an inch, or 1.5″ in diameter. All F32 and F40 lamps are essentially 4 foot long lamps (47″ if you don’t count the pins).
What happens if you put a T12 bulb in a T8 fixture?
If you place T12 tubes in a fixture with a T8 ballast, you will wear out the ballast and have to replace it. If you place T8 tubes in a fixture with a T12 ballast, then the tubes will have a shorter life due to a higher current through the tube.
What is the difference between T12 and T8 fluorescent bulbs?
While both bulbs come in standard lengths, commonly 4 feet, the designation of 8 or 12 refers to the difference in the diameter of the bulb. T8 bulbs are 8/8 inch (a full inch, in other words), while T12 bulbs are 12/8 of an inch in diameter — 1 1/2 inches.
Are Sylvania light bulbs made in the US?
Sylvania in St. Marys, Pa., is the only place still making light bulbs in the U.S. “I take great pride in our company that they did stick it out and stay in the United States,” said plant employee Kris Anderson. For Sylvania sticking it out has been no easy feat.
Do T8’s fit in T12 fixtures?
In an effort to make LED tube lights compatible with the internal dimensions of most fixtures, you will find that most LED tube lights feature a T8 or 1 inch diameter. They can indeed be used in T12 fixtures.