Hello everyone, So some background on what I am doing. We have a pelican case with a bunch of PCBs that require DC voltage. I have purchased these power supplies (http://www.meanwell.com/search/EPS-65/EPS-65-spec.pdf [Broken]) to do the AC to DC conversion. They are located inside the Pelican case as well. On the input side of this power supply they only have connections for the Live and Neutral AC line. The block diagram in the datasheet shows the Live and Neutral being inputted and the Ground connecting somewhere else, I'm assuming to a frame or chassis. This Pelican case has an aluminum top plate that has the lamacoids to control the functions of the various PCBs. Is it safe to put the AC ground to the aluminum top-plate? I'm thinking it is not since that is where they will have their hands and if a fault does happen it may give them a shock. I've done some searching around and I guess some AC/DC converters will tie the Ground to the V- on the output side. If I do this, am I bypassing the transformers function inside the power supply? Would it be better to tie the AC ground to the plastic Pelican case? Any insights into this would be very much appreciated!