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Another perhaps subtle point that may not apply to EU (CE) markets, I recall an issue with one commercial product design where my in-house safety guy told me that any external connection labeled as "ground" on a product with 3-wire line cord must pass a ground bonding test.
I don't recall the exact details but the terminal labeled as ground must accept something like 50 amps for several seconds with less than several volts of voltage rise. In my particular case a PCB trace was evaporated by the test. I was given the option of renaming the connection something other than ground or beefing up the PCB. I made the product pass the test because IMO it was the right thing to do.
I notice some chassis pictures with XLR pin one labeled "GND". My guy would be testing those at tens of amps. FWIW
JR
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