A 2 part question. I've built large scale LED projects in the past, but for the next one it would be massive (a black hole disc with a diameter of 54 ft), and addressable LEDs on the top and bottom. Ideally, they would be WS2812B string LEDs so that I could control them with video using DMX controller. At the current size of the LED strings (14ft, 50 LEDs and 3 inches apart from each one), I estimate it would be 15,120 LEDs on the top and bottom, so 30,240 total.
For the size, I don't need LEDs that close together to produce a coherent effect I think. Is there another way people do projects of this size without using something like these? https://www.amazon.ca/Rextin%C2%AE-WS2811-Digital-Addressable-Waterproof/dp/B01AU6UG70/ref=sr_1_14?crid=2BZM04MO85064&keywords=btf+ws2812b+string&qid=1658861330&sprefix=%2Caps%2C206&sr=8-14
Obviously the wattage would be insane for this. I've done 3000 LEDs, and had to boost power with a new power supply every 150 LEDs, in different outlets. Even with multiple power injections, how would I not blow every fuse imaginable?
I've seen many buildings and large scale LED displays in China for example, how is this typically done?