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E40 Gas Discharge Lamps

E40 Gas discharge lamps give an intense light and are also known as HID bulbs, or High Intensity Discharge bulbs. The gas discharge lamp uses a ballast and needs a moment to burn at full power. The high pressure gas discharge lamps are available in different varieties like the energy-efficient HPI bulbs or the SON bulbs, that are perfect for use in functional outdoor lighting. When replacing, be mindful of the fact that a switched on HID bulb is very hot. Therefore, let the light bulb cool or use a cloth.

LED Gas Discharge Lamps

Colour Rendering (Ra)

20-29 22
60-69 14
80-89 12
30-39 5
40-49 5

Colour Code

220 - Extra Warm White 18
842 - Cool White 4
320 4
252 3
542 - Cool White 3

Luminous flux (lm)

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.