I plan to run all 1080Ti at 80% max draw on MSI Afterburner, so should be around 80%*250=200W

1000W PSU will have mobo, cpu, ram, ssd and 3 1080Ti. Should be around 150W for mobo/etc + 3*200W for the GPU, 750W total or 75% load.

850 PSU will have 3 1080Ti, so 3x200W = 600W, 70.5% draw

What do you guys think??

Also wondering if I can run all of this out of a 120V 15A circuit. Total power draw: 750W+600W=1350W.

15 A 120V should be 1800W, or at 80% draw, 1440W. 1440W > 1350W. Right?

Failing to see what I'm doing wrong or if I miss something. Those circuits are separate and nothing else will be plugged on them.

Thanks!