You could run 2 L3+ on a 20amp 120v circuit, but you could only run one on a regular 15amp circuit. Well you could run 2, but you will likely end up serving drinks and food to a bunch of guys with a big red truck, sirens, and some spotted dogs... LOL
I am also looking at building out some 220v circuits and trying to figure out the plug, and PDU configurations etc for this.
and heck your making money hand over fist now right? (or will be at least for a bit) just get an electrician and all you got to do is say where and point

Thanks for the feedback guys. And yeah, at this point, assuming july difficulty increase with new units coming online and price updates don't drop profitability down to anything too horrible, I'm just going to hire an electrician. If profitability stays anywhere like current levels, the demand for outside hosting will continue to grow and I'll need a place to run them in the meantime. Not having the electrical engineering background, or really any electrical background, setting stuff on fire is not my goal nor having the equipment burn out or anything. Thanks again all.