Yes, I agree I should have asked!! 
I thought I had more time - he came by to do the work when I was out of town.
Now I'm going to try and work with what I got. 

Yes, that it the exact outlet style I have.  My limited understanding is that the hot are the two vertical prongs, top is ground (round hole) and bottom is neutral (90 degree angle hole "L").

Hi, I had posted in another section of the forum and told to move here, hopefully this is the correct section, such a newbie

I have a 220V outlet wired on it's own 30 Amp circuit, wired by an electrician.  He installed a 4-Prong Dryer outlet, the NEMA 14-30P.  I am trying to connect and run one APW3-1600 watt power supply for an S7.  I have the power supply, miner and I see the plug on the power supply is the standard computer C13.  I have found it next to impossible to find an adapter from C-13 to any style of 220 plug.  I'm pretty creative and handy and not above putting something together with a standard dryer cord and a dissected c-13 cord but I really want to do this right and with 220 - it's serious business.  Can I get some advice on the safest/best way to connect my APW3 to my 220 outlet.
I'm really hoping there is some way of doing this that doesn't involve me paying for another semester of college for the electrician's kids!  He was expensive!  
I'll only be running this one power supply on the outlet/circuit and am looking for a less is more approach at this point.  I didn't think sourcing the power cord would be such a big deal.

Thank you, moving it!

I have a 220V outlet wired on it's own 30 Amp circuit, wired by an electrician.  He installed a 4-Prong Dryer outlet, the NEMA 14-30P.  I am trying to connect and run one APW3-1600 watt power supply for an S7.  I have the power supply, miner and I see the plug on the power supply is the standard computer C13.  I have found it next to impossible to find an adapter from C-13 to any style of 220 plug.  I'm pretty creative and handy and not above putting something together with a standard dryer cord and a dissected c-13 cord but I really want to do this right and with 220 - it's serious business.  Can I get some advice on the safest/best way to connect my APW3 to my 220 outlet.
I'm really hoping there is some way of doing this that doesn't involve me paying for another semester of college for the electrician's kids!  He was expensive! 
I'll only be running this one power supply on the outlet/circuit and am looking for a less is more approach at this point.  I didn't think sourcing the power cord would be such a big deal.