EIA2021
Wattage VS Luminous Flux
| LUMEN | INCANDESCENT | LED | CFL | HALOGEN |
|---|---|---|---|---|
| 200 - 300 Lm | 25 Watt | 2 Watt | 5 Watt | 20 Watt |
| 300 - 500 Lm | 40 Watt | 6 Watt | 7 Watt | 28 Watt |
| 500 - 800 Lm | 60 Watt | 9 Watt | 12 Watt | 42 Watt |
| 700 - 1000 Lm | 75 Watt | 10 Watt | 14 Watt | 53 Watt |
| > 1000 Lm | 100 Watt | >15 Watt | >16 Watt | >70 Watt |
Luminous flux (in lumens) is a measure of the total amount of light a lamp puts out. Wattage is the amount of watt a bulb uses in 1 hour. We've long identified bulbs by their wattage, but that is actually a measure of electricity, not the brightness of a bulb. The amount of light a bulb generates is measured in lumens. An incandescent 60-watt bulb, for example, gives off 750 lumens of light and LED bulbs can deliver the same amount of light using as little as 9 Watt! The amount of Lumen divided by the wattage will show you which lamps are most energy efficient.
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