What do the numbers on lights mean?

What do the numbers on lights mean?

The letters and numbers on light bulb packages are coded shorthand for the shape and size of each bulb. In other words, they precisely describe the shape or type of bulb as well as its diameter.

How do you read a lamp code?

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 do the numbers on a tube light mean?

Fluorescent tube shape 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.

What is a 60 watt Type A bulb?

incandescent bulb
A standard 60-watt incandescent bulb puts out about 820 lumens. That translates to a 60-watt incandescent bulb producing 13.67 lumens per watt. One of the better CFLs on the market, the GE Reveal Bright from the Start light bulb, uses 15 watts to produce 740 lumens. That bulb has an efficiency of 49.33 lumens per watt.

What does R50 bulb mean?

Again, coming as incandescent, CFL or LED, they are called: R39 – 39mm Diameter. R50 – 50mm Diameter. R63 – 63mm Diameter.

What does DX mean on a fluorescent light bulb?

daylight
“DX” probably means daylight, but, then again, you have to compare the Kelvin rating. 6500K light is a very clean light. Beautiful lighting, but ALL bulbs in a room, should be the same Kelvin rating.

What CRI 90?

90 CRI: Good Color Quality Most objects, including fresh produce, meats, wood furniture and skin tones, for example, will for the most part appear normal, and you will not find anything to be off-putting or strange.

What does DX mean on light bulb?

What do the numbers on a color light bulb mean?

The number will often be three digits, the first indicating color rendering (a “7” standing for “75,” for example) and then the next two indicating color temperature (a “41” standing for “4100K,” for example). diameter in eighths of an inch; this lamp is 12/8 (1.5) inches in diameter mode of starting; the lamp is a rapid-start lamp.

What do the letters in fluorescent light bulbs mean?

Other Fluorescent Lamps. “FC” instead of “F” means the lamp is circular. “FB” or “FU” instead of “F” means the lamp is bent or U-shaped. The suffix “U” can also be used for U-shaped lamps, followed by a “/” and a number that indicates the distance between the lamp’s legs in inches. “FT” instead of “F” is used for twin-tube T5 lamps.

What is a fluorescent lamp identification code?

Fluorescent Lamp Identification. Fluorescent lamps are identified by a standardized code that reveals valuable information about operating characteristics and physical dimensions.

Where can I find manufacturer’s codes for lamps?

Manufacturers’ codes, found on the lamps and in catalogs, may vary slightly from the generic designations. However all major lamp manufacturers base their codes closely on the identification system discussed below. The best way to learn lamp identification is through example.