Best Answer Anonymiss , 02 May 2015 - 04:25 PM
Why does an LED only draw half the power/wattage of an HID?
ie, a 300w LED, is equivalent to a 600w HID in output but not power useage?
It's because (some) LEDs produce more lumens per Watt than HID lamps, so the 300 Watts consumed by (some) LEDs will produce more light than 300 Watts of HID.
ETA: It's the same as HPS producing more light-per-Watt than fluorescent (which is also often around double/half).
For well made/specced LED's It's simple,
because LED's (or rather S(uper)LED's as that is what they are) work by switching on and off at a fast rate (too fast for the human eye to recognise)
Therefore, they only use half as much power because they are only actually 'ON' in the powered sense for half the time.
This isn't really the answer, but it does explain the marketing-speak
If the LEDs are only on for half of the time then they are producing only half of the output that they are capable of
It's like saying that a 100 Watt lamp on a dimmer switch is actually only a 50 Watt lamp when it's turned down to 50%. Go to the full post
