Rapid start 40 watts or less and preheat lamps.
Fluorescent lamp identification guide.
You will usually be able to find all the details you need to source a replacement bulb on the plastic base of the lamp.
Variations are identified by a standardized code marked on the light bulb.
The color of the light is the most obvious way to identify fluorescent lighting.
The best way to learn lamp identification is through example.
Below is a range of fluorescent lamps one for each popular starting method.
Fluorescent lamp guide lamp reference august 2014 2 fluorescent manufacturer cct k cri catalog initial lumens rated avg.
How to choose the right kelvin color temperature.
Most fluorescent lamps such as the ushio bulb shown just above include the bulb s color temperature 5000k in this example right next to lamp s watt data.
A circular fluorescent differs from a straight tube only in shape.
Cool white fluorescent light bulbss are most common in offices hospitals and manufacturing facilities.
All fluorescent lamps use the same technology but there are several different variations and sizes.
Life 2 17w fluorescent t8 ge 3000k 78 f17t8 sp30 eco 1325 20000 ge 3000k 86 ft17t8 spx30 eco 1350 20000 o s i.
3000k 75 f017 730 eco 1325 20000 osi 3000k 82 f017 830 eco 1400 24000 philips 3000k 75 f17t8 tl730 alto 1325.
3000 k lamps such as ge s f13 t5 13 watt lamp is considered soft white.
But there is more to fluorescent lighting than just whether the bulb gives out warm or cool light.
Residential lighting restaurants and hotels benefit from a warmer white that sets a comfortable and homey tone.
The difference is in the diameter.
Light bulb color temperature is represented in the unit of absolute temperature kelvin noted by the symbol k.
Rapid start lamps are the most popular fluorescent lamp type used in commercial applications such as office buildings.
There are three common sizes shown in the chart the below.
A newer rapid start fixture has a ballast that supplies extra power when turned on so the light comes on immediately.
Exampes of fluorescent lamp color temperatures.
Household fixtures are commonly found in color temperatures on the kelvin scale of 2700k warm incandescent 3000k warm white halogen and 3500k household fluorescent.
An old delayed start fluorescent flickers a few times before coming on as the starter delivers a burst of energy to get the tube going.
All of these lamps use the same technology as linear fluorescent tubes but are wrapped into shapes which make them more suitable for smaller spaces.
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Linear fluorescent tubes are the most common type of fluorescent lamps.
T12s are 1 5 inch diameter.