I do something similar OP
I remove the fuse from the plug, stick plug into wall socket then connect it to Power Supply
Power supply switch is off
My strap has a crocodile clip on it I just clip it onto the PC case.
Most of the companies I have worked at in my 20+ years of working in the Electronics industry have used wrist straps, conductive floor coverings , ESD safe work stations , ESD clothing (coats shoes hats etc)
I remove the fuse from the plug, stick plug into wall socket then connect it to Power Supply
Power supply switch is off
My strap has a crocodile clip on it I just clip it onto the PC case.
Most of the companies I have worked at in my 20+ years of working in the Electronics industry have used wrist straps, conductive floor coverings , ESD safe work stations , ESD clothing (coats shoes hats etc)