Hello all:

I have a 800W power supply purchased from Antek (PS-8N63). The power supply has two red wires (which goes to the neutral) and two black wires (which go to the hot) and is mounted on a large aluminum chassis. The DC output is on a green terminal board plainly labeled "+" and "-".

The heatsinked IC's are bolted to the aluminum frame. The problem is that the instructions make no mention of grounding. I have the incoming AC power cable coming in with a red, black and ground.

I connect the ac power cable red to the power supply red, the ac power cable black to the power supply black. I turned the power supply on and before just blindly connecting the ac power cable ground to the chassis, I measured the voltage difference between the ac power cable ground (still floating) and the chassis as follows:
ac power cable neutral (red) to aluminum chassis - 37VAC
ac power cable hot (black) to aluminum chassis - 55VAC
ac power cable ground (no connection anywhere) - 37VAC

Question: Do I just connect the the ac power cable ground to the aluminum chassis?

Bill