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Lumen equivalents of halogen floods v Led

hertzal123
I am trying to find a replacement for 300W halogen floods.A search online gives halogen 300w as 5000/6000Lm.Looking at a Luceco  led flood in electrifix

catalogue,it claims 22W is equivalent to 300W halogen,but they only give 1800 Lm,so how can they be as bright as the 300W halogen?

Thanks for any help.

                                    Regards,

                                                Hz.
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  • 0
    A lumen is a lumen and should represent exactly the same amount of light, no matter if this be obtained from a glowing filament or from LEDs or from the combustion of gas.

    In practice makers and vendors of LEDs tend to lie and exaggerate considerably, they use "Chinese lumens" that are no doubt related to Chinese watts produced by in car audio equipment.


    In the past LED vendors generally multiplied the wattage by ten in claiming an equivalent light output, so a 22 watt LED would be claimed as an equivalent to 220 watts of incandescent. These days they multiply by about 15.


    The light output of the halogen floodlights tends to be exaggerated also, but not as badly. It is common practice to take the LAMP output without any allowance for losses in the cheaply made reflector and cover glass.


    Ideally conduct a practical trial. If this is not possible then select an LED that is claimed to equal a halogen of the next largest wattage. So to replace a 300 watt halogen, use an LED that is CLAIMED to replace a 500 watt halogen.
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  • 0
    A lumen is a lumen and should represent exactly the same amount of light, no matter if this be obtained from a glowing filament or from LEDs or from the combustion of gas.

    In practice makers and vendors of LEDs tend to lie and exaggerate considerably, they use "Chinese lumens" that are no doubt related to Chinese watts produced by in car audio equipment.


    In the past LED vendors generally multiplied the wattage by ten in claiming an equivalent light output, so a 22 watt LED would be claimed as an equivalent to 220 watts of incandescent. These days they multiply by about 15.


    The light output of the halogen floodlights tends to be exaggerated also, but not as badly. It is common practice to take the LAMP output without any allowance for losses in the cheaply made reflector and cover glass.


    Ideally conduct a practical trial. If this is not possible then select an LED that is claimed to equal a halogen of the next largest wattage. So to replace a 300 watt halogen, use an LED that is CLAIMED to replace a 500 watt halogen.
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