I would also recommend a PDU if you go to 240V. It's super clean compared to a ratsnest of 120V. I have a 14-30 dryer socket (30A 240V service) and I made a 12awg cord going to two L6-20R sockets. The PDU comes with an L6-20P plug so it is just plug & play from there.

A couple of these (240V 20A): http://www.amazon.com/gp/product/B0052NM4JA/ref=oh_aui_detailpage_o06_s01?ie=UTF8&psc=1
Lots of these: http://www.amazon.com/gp/product/B006ZB304G/ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1

Keep in mind that most equipment is 80% of their listed current. 20A PDU would be 16A continuous, and 30A PDU would be 24A continuous. That's why I opted to go with multiple cheaper 20A PDU rather than a single 30A PDU.

BTW I have that EVGA 1300 G2 and it runs fine @ 240V.