Why not go with 3 PSUs? For $60 you can get something like
Corsair CX500, which will easily power a single ant, even an overclocked one.
Cables, and How would i go about setting each one up? Im running these in my garage which only has two outlets (2 plugs, not two sets of two) but that's it, so I have the whole circuit to myself xD. I don't really want 1500w running through a power strip..... I also need the other plug for ethernet over power bridges. SO yeah, how should I go about doing this?
A power strip rated at 15A+ will run 1500W no problem, and it costs less than $10. Besides, you will only need 3x400W=1200W to power the miners.
You can go for a gold rated PSU to save 5-10% of power consumption, say
Rosewill CAPSTONE-450 450W Continuous @ 50°C for $60.
If you are set on using a single PSU, go for this one
Rosewill LIGHTNING-1300 1300W Continuous @ 50°C for $240, it's also modular, so even less cables.