Table of Contents
A T8 lamp (on the right in the figure below) is eight-eighths of an inch, or one inch (2.54 cm), in diameter. Both T12 and T8 lamps use the medium bi-pin base, which allows T8 lamps to fit into the same luminaires as T12 lamps of the same length.
What is the difference between T12 and T8 bulbs?
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 is the difference between T8 and T5 bulbs?
The major physical difference between T5 and T8 light bulbs is the length and diameter of the tube itself. The T5 tends to be slightly shorter than the T8 tube, and is significantly smaller in diameter. This factor is important to consider when looking at your fixture, because the two tubes are not interchangeable.
Are T8 and T12 bulbs interchangeable?
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.
What does T5 and T8 mean?
The “T” in T5 signifies that the bulb is tubular, and the “5” indicates that it is 5/8 inch in diameter. The larger T8 (eight-eights, one-inch) tubes are also popular. The T is simply a code that indicates the bulb’s shape and output. It specifies the level of energy efficiency as well as the diameter of the lamp tube.
Are T8 fluorescent bulbs being discontinued?
Even some T8 lamps have been phased out. US Congress has enacted legislation to prohibit the manufacture of these and other inefficient lighting technologies, and is calling for manufacturers to meet minimum efficiency requirements and lumens per watt for new products.
Can I replace my T8 bulbs with LED?
Yes, you can replace fluorescent tubes with LED tubes or LED-integrated fixtures. If you just want to replace the bulbs, you can use plug-and-play, direct-wire, or hybrid LED tubes. Plug-and-play tubes are the easiest to install as they do not require any rewiring to the fixture.
What is T4 lighting?
T4 tubes have a diameter of 13mm. They’re compact and easy to install making them perfect for illuminating kitchen counters and worktops as well as under cabinet lighting. These tubes will generally use between six and eight times less energy. This will save you money and help save the environment.
Can I use T5 bulbs in a T8 fixture?
T5 lamps cannot replace T12 or T8 lamps because of differences in physical and electrical characteristics. T5 lamps come in different lengths than T8 and T12 lamps. A nominal 4-foot T5 lamp is actually shorter than an equivalent T8 lamp [1149 millimeters (45.23 inches) in total].
Which is better LED or T5?
The main advantage of LED over T5 lights is that it is more efficient, which will save cost (bulbs & power) in the long run. LEDs also do not produce UV light by default (unless UV diodes are used), while florescent lighting does. It takes real depth of knowledge to know what to look out for in an LED fixture.
Can I use T12 LED in T8 fixture?
In terms of physical compatibility, both T8 and T12 lamps use the same G13 bi-pin base, so as long as they are the same length (e.g. 4-ft), a T8 lamp will physically fit inside a T12 fixture.
How do I know which fluorescent light bulb to buy?
In order to identify which size you need, the easiest way to tell is to read the label near the base of the tube. If this information is no longer legible, you can measure the bulb’s diameter. Fluorescent tubes are measured in eighths of an inch.
How do I know what type of ballast I have?
You can determine whether you have a compatible fixture in seconds. Simply turn the light on, then take a photo of the fixture using your smartphone or digital camera. If there are no dark bands on the resulting image, you have an electronic ballast that will work with direct drop-in LED tubes.
Which is brighter T8 or T5?
because the T8 tube light is high brighter than t5 tube. T5 led tube light, which is less filled with electrons and inert gas. In contrast, If you want to creat a darker lighting environment.
What is the brightest fluorescent light?
Fluorescent T5s These are the newest development in the fluorescent family. Although they are the smallest, they are the most energy efficient and brightest. In fact, some T5s last up to 90,000 hours.
What is the wattage of a T8 lamp?
A T8 fluorescent that uses 32 watts of energy typically produces 2500 lumens of light. It’s LED equivalent, while using only 17 watts, produces 2200 lumens. Additionally, T8 LED light bulbs have a lifetime rating of 50,000 hours, more than 3 times longer than 15,000 hour average lifespan of T8 fluorescent lights.
