When I was still running all LED lights, I could have run my whole display on a single 15amp circuit with room to spare. But I used at least 3 circuits just because it lessened my need for extension cords. I have more lights today but 100% pixels and I suspect I could still run my display from a single 15amp circuit, but I am now connected to 4 outside outlets (separate circuits) just because it is easier. Back in the incan days I could not even run all my minitrees from one circuit. LOL