Power connection summary:
Note: I received the PSU configured for 220 volts, and a power cord not compatible with my country. Fortunately, I have lots of extra power cables. Standard computer cables work fine.
1) Set the voltage switch on the side of the PSU to 110 or 220, depending upon your country (110 for USA).
There are 9 terminals on the PSU. They are number. From left to right, they are 1 through 9.
Terminals 7, 8, and 9 are Ground, N, and L, respectively
2) Cut the power cord and expose the wires. The wires are colored Green, White, and Black. The the USA, the Green is connected to the center terminal, the white to the wider terminal, and the black to the thinner terminal. Connect the wires to the PSU as follows:
Terminal #, Terminal Name, Wire Color, Purpose
7, Ground, Green, Grounds the outside of the case so your don't shock yourself.
8, N, White, Neutral - This is the return path of the electricity to ground.
9, L, Black, Line Voltage - This is the power from the power company.
The power cable for the miners has red and white wires. Red is connected to the inside of the terminal, and white to the outside. The power to the miners is DC, so direction matters.
Terminals 1, 2, and 3 supply +12 volts. They are all identical. As far as I can tell they are all interconnected, so it doesn't matter which ones you use.
Terminals 4, 5, and 6 are Ground. They are all identical. As far as I can tell they are all interconnected, so it doesn't matter which ones you use.
3) Connect the Red wire to terminal 1, 2, or 3. Connect the White wire to terminal 4, 5, or 6. Repeat for 5.
4) Do all of the above for the 2nd PSU
So if I understand you right, in the US it doesn't matter if I switch black/white wires around for this PSU?
It matters, but it works either way. With A/C power, the electrons go both ways so either way works. However, N or Neutral, is the return path to ground of the power. In theory, you will not get shocked if you touch that wire.
For safety purposes, devices are wired assuming that a specific wire is Neutral, and the other Line (live). It keeps that wire away from anything that you might come in contact with.