My First intention was to completely max out one rig before expanding rig two and then eventually three, but after placing 13 GPU's on the first frame and gauging the power consumption and what my wiring should be able to consistently handle running 24 hours a day, I spread my cards out over three rigs and then spread them around the home, so as to have no single rig running over 1100 watts, well under the home 110 volt wiring specs, since my circuit breakers are all 30 amp fuses, I am using less than half of what the breakers would pop at this way,

these are 20 EVGA 1070 ti SC Hybrids, with a random single 1070 ti, and an old GTX 970 that I put to work as the far left card on the first rig, 11,000 Sol/s (Equihash) combined for the three rigs,

with room to expand some if desired,