I bought a switched PDU from aliexpress, and i broke the rule of buying from ali... I tested it! The Live and Neutral wires on the PDU are crossed over.
I've attempted to return it, but aliexpress keeps denying me saying its a grounding problem with my test setup... hence why i stuck the fluke in directly for a direct illustration.
Thanks, I'll try to ensure i'm dealing with ali and not the seller.