Grounding on M441 and M402?

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Hi folks, new poster here.

I'm in the process of racking up a set of these, and have a question about grounding. how do you think I should wire the input/output grounds? should I tie them both off to the ground pin, lift the output ground, or tie one or the other to mains earth pin?

I am using a the following power supply, which differentiates between the mains earth pin and ground pin relative to the 48vdc pin.

http://www.clrwtr.com/PDF/Sola-Hevi-Duty/Sola-81-83-OEM-Power-Supply.pdf

What the pcb lists as "V-" is actually the ground relative to the 48vdc output.

Thanks for any help!
 
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