I run 9 sp20's and 1 s-5 .  give us info .

 what state if you are in the usa.

what is your power cost per kwatt?   both the delivery charge and the kwatt charge.



  110v 100 amp  box is not going to  do it.  it can safely do 80% of 11000 or 8800 and nothing else

110v   150 amp box is just about enough.  it can safely do  80% of 16500 or 13200

110v 200 amp with 220v service is pretty good. it can safely do  80% of 22000 or 17600 watts

a sp20 can use as low as 500 watts and as high as 1250 watts  depends on how you set the sp20.

I use around 6500 watts running my 10 pieces of gear.  I underclock.   My machines vary from 550 to 710 watts each and total about 6500 watts.

 I have a 110 volt 150 amp setup .

 I could wire a few 220 volt lines as my box has 3 spots to use 220 volt fuses.

 I choose to stay with the 110 volt wiring and not bother to upgrade to a few 220volt circuits.