How do I know what size fluorescent tube I need?

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.

What is the difference between a 735 and 835 lamps?

Color rendering is measured on a scale of 0-100, so a light bulb that says 735 would have color rendering in the 70s, and one that says 835 would have color rending in the 80s.

How do you read a Sylvania bulb?

Linear fluorescent lamps typically include a “T” in the shape abbreviation with a number following it. This “T” stands for tube and the number that follows is the diameter of the tube. That number is divided into 8 to translate into inches. So a T8 has a one inch diameter.

How do you read the numbers on a fluorescent tube?

Lamps are typically identified by a code such as FxxTy, where F is for fluorescent, the first number (xx) indicates either the power in watts or length in inches, the T indicates that the shape of the bulb is tubular, and the last number (y) is the diameter in eighths of an inch (sometimes in millimeters, rounded-up to …

What does the T stand for in fluorescent bulbs?

The “T” designation in fluorescent lamp nomenclature stands for tubular — the shape of the lamp. The number immediately follow- ing the T gives the diameter of the lamp in eighths of an inch.

What do the numbers and letters mean on a light bulb?

The code number of a bulb consists of a letter or letters followed by a number. The letter indicates the shape of the bulb and the number relates to the diameter of the bulb in eighths of an inch. The mosts commonly used household bulb is the A-19.

How do I know if I have 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 T5?

T5 fluorescent light bulb is a newer technology than T8. T5 fluorescent light bulb has an efficiency of about 100 lm/W. T8 fluorescent light bulb can reach about 90 lm/W luminous efficacy. In other words, T5 fluorescent lamps can use the same amount of power to produce more light.

Can I use T8 instead of T12?

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 do light bulb base codes mean?

The bulb’s base is measured differently but in a much easier fashion. The number refers to the diameter of the base in millimeters. So a bulb with an E26 base is 26 millimeters. Or if we’re talking about the G series two-pin base, it would be the distance between the two pins measured in millimeters.

What is the standard size of a fluorescent light?

Fluorescent circline tubes are typically 1 and 1/8 of an inch in diameter. Their outside diameter (which is measuring the circle from one end to the other) comes in four options – 6, 8, 12, and 16 inches.

How do you read a light bulb part number?

The lamp shape is comprised of two parts: the actual shape and the diameter of that shape. The diameter is a number that directly follows that shape abbreviation and is represented in 1/8-inch increments. In the example A19 the A stands for alpha shape and the 19 represents 19/8 of an inch which is 2 3/8 inches.