Like this title says..
I currently have a 12 1080 ti rig running from an 12 gauge extension cord (2 1200w bitmain psu to power 12 gpu's and a 1050w psu to power mb and risers. The extension wire do get a little warm. I also have another 6 1080 rig which i put it upstair (afraid ill trip my 20 amp fuse). My real question is....how do you manage to run multiple rigs without re-doing all your house wires?
As others have said if you are wanting to runs as efficient & safely as possible it is really important to use dedicated circuits. I currently have 3 new 20A breakers in the main circuit panel powering all two of my ASIC miners and one of my GPU miners. Also, you have to keep in mind what the main breaker can draw for power as well or you could risk overheating it and tripping the main, a this can be a very bad issue i.e. burning down your house -
https://www.youtube.com/watch?v=xNnAvTTaJjM status.