At this rate we'll not ROI the import charges alone

Question about the APW++ Do I need to connect it to 220v to have enough power for the D3?
What batch your D3's are from ? Did you get a 15 , 17 or 19 GH/s miner ?
As reported by a few members here on the forum , the 15GH/s version pull under 1000watts , so youshould be ok on 110-120volt.
I think the 17GH/s version should be ok also, those miner are pulling less than 1200watts , the apw3++ rated to 1200 watts on 110volts.
Im not sure about the 19GH/s version ,i have a few those , the power consumption is around 1150-1260 watts for each , so i would not suggest to use it with apw3++ on 110-120 volts.