I'm wondering, when one connects the 3rd wire ground to the chassis of an amplifier to prevent the chassis going hot in case of a fault, doesn't this negate the safety benefit of floating the secondary of the primary transformer from the line side? Since the chassis is grounded at the IEC connector on the primary side, and probably through the input/output jacks on the secondary side, I would assume that it is now possible to be shocked just by touching the amplifier B+ or B- supplies and some grounded object, instead of having to touch both sides of the secondary transformer that's completely floating. Is this correct?
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