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Medical devices have to meet ground fault/isolation requirements such as 60601-1 (link). Particularly galvanic isolation is required on power and data lines to avoid a fault conditions that could electrocute somebody. Do consumer electronics have any such standards that must be met?

I see this is a real issue that kills up to 70 people a year (link) in consumer tech. Based on designs for common devices like cellphones that I have seen there is no particular care taken to ensure that the chassis can't become dangerously energized when charging from something with a 2 prong charger (No Earth GND). Are there cheap methods that provide sufficient protection such as fuses? Galvanic isolation is typically expensive and difficult for large power draws.

EasyOhm
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    there is a transformer in those phone chargers. There are standards for non medical consumer equipment. Go shopping for ac-dc wall warts on Digikey or Mouser and lo at their datasheets – DKNguyen Jan 24 '20 at 15:19
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    I have yet to see a 2-prong charger which is _not_ galvanically isolated... – brhans Jan 24 '20 at 15:44
  • @DKNguyen but how does the cellphone guarantee that? You could plug into a USB port with a fault on it just as easy. – EasyOhm Jan 24 '20 at 23:35
  • @EasyOhm And what do you think powers the USB port on your computer? The giant power supply (which actually will have a 3-prong plug but that's besides the point here) which has a transformer in it. "What happens if someone plugs it into a USB power source with no transformer?" Well, first of all, that shouldn't have been built to begin with. It'd be like building a car without brakes. You can't idiot-proof everything. – DKNguyen Jan 24 '20 at 23:49

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