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I am currently working on a LED lighting display for our hockey team. The issue being is that the run from the control booth is 225 ft. The LED is 24V and is a total of 80 watts usage. I would like to run the wire from the current location where its controlled in the booth. Anyone here be able to tell me the size of 24Vpower supply I would require to push that power and have enough to light up the LED without a huge voltage drop. I was going to use 16AWG wire from the power supply to the beginning of the LED run which consists of 20 AWG wired strips Thanks for your help
 

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12 ga (not looped) will give you roughly 2.4V drop along the run which may or may not be acceptable given the output transformer and the range of the lights.

80W*225ft/7500 (12ga constant)=2.4V
 

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Power supplies don't push power, you size them larger than or equal to the draw. If your load is 80 watts than you need a minimum 3.4A 24V PS or about a 100VA. That's a long run for 24V, even with 12AWG I'd expect a 5% voltage drop which should be fine....but if you can run 120V there and put the transformer at the light end that would be ideal.
 
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