I'm trying to make a display out of 2811 LEDs from China (15 meters long x 7 LED strips). Each strip consumes 18W@5V(3.6A) per meter and I plan to use 7 strips, each 15m long. My calculations show we'll need a 5V power supply capable of producing ~460A...
(15 meters * 18 watts per meter * 7 strands of LEDs / 0.8 power supply efficiency) ~= 2300W @5V ~>460A.
I was planning on purchasing a 600A 5V power supply, running a power bus behind the LEDs and tack it to the strips every 2 meters to ensure even power distribution, but when I tried to calculate necessary wire gauge online, all the calculators say values "out of Bounds" suggesting that the cable needed would be too large. Would I really need to have a separate power bus for each strip?
How do we make this work? :-/ We're installing the LEDs between two elevators so it's not like we can hide power supplies in the middle. It would have to be at either end of the 15m runs...
Any crazy suggestions would be appreciated.