Confirmed, i am an idiot. So problem is AC ripple of 115V. I saw "leak" in title and it was late and i imagined high impedance dc potential.
So if you say wanted to add a ground to your smps, could u "just" change the figure 8 connector (and cord) to the 3 prong kind and then connect that wire from earth to the negative of the dc output? Or do you have to do something to the Y caps, too?
I say "just" because the connector would have to physically fit just right.
Perhaps there's an opportunity for a kit for this type of problem that wouldnt risk voiding UL cert or rause firemarshall/insurer eyebrow. You get a small black box with a Dell 3 prong cord. Out of the black box you get a very short pigtail figure 8 AC cord and a lone 4mm socket for a ground connection where u can earth stuff? Label to show maximum amps of the cord?
Can this sell like snowcones in july?
I ask this because it is ok to connect a banana plug fly wire to dc side of the output cable yourself, is it not? As long as the smps black box remains sealed and unaltered, is good? (Also, besides insurance concerns, most SMPS are in a case that is ultrasonically welded. So there is no way to close it back up that looks nice). So I imagine if you could make this "kit" people would buy it. Perhaps instead of a pigtail figure 8 cord, it would just have the connector extending out the side, so you can plug it into end end of any SMPS and leave it there, perhaps even glue the two together, effectively changing it from 2 plug AC input to 3 plug grounded.