80 means a cri between 80 and 89 and so on.
Fluorescent light fixture sizes.
There are 4 different fluorescent light options.
This lamp is shaped like a tube.
Because of their energy efficiency and light output i e.
Sizes and types of fluorescent lights.
This lamp is 12 8 1 5 inches in diameter.
Lumen output you see a lot of high output t5s used in warehouse fixtures.
For example a 20 inch diameter foyer light would be ideal for a 10x10 foyer.
Most tube lighting will have its size mentioned on an end of the tube.
Fluorescent bent lamps come in a few different options.
In this code 70 means a cri between 70 and 79.
The t stands for tubular and the numbers are an index for the diameter in inches of the tube.
Fluorescent tube sizes guide.
A good rule of thumb is to add up the width and length of the foyer in feet to find the ideal diameter or width of a light.
You ll also see them in over the counter lighting shelf lighting or cubby lighting in retail spaces because of their compact size.
Southwire industrial 1 light antique brass outdoor weather tight flushmount wall light fixture.
Bi pin bulbs use a conventional ballast and starter unless the light fixture has been coverted to use an led replacement for a conventional fluorescent bulb a step that can be taken if the ballast is a newer electronic type.
T4 t5 t8 and t12.
Diameter in eighths of an inch.
With lighting fixture circuits you have to take into consideration the voltage capacity of the circuit and the wattage of all the lighting fixtures that run through the circuits to get the recommended wire size.
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 the nearest millimeter.
In the 1990s manufacturers began to add a numeric code describing a lamp s color to the string of characters identifying the model replacing the cw wwx etc designations.