Remember that the idea,of polarization is,because cost cuttings in products. A product opting to use 2 prongs and grounding the chassis would cause problems. Ye

Remember that the idea,of polarization is,because cost cuttings in products. A product opting to use 2 prongs and grounding the chassis would cause problems. Yes it's forbidden, but may happen and (and products may be repaired by not so perfect techs) and the current system will offer you no precaution. And don't even get me started on adapters for international products... Which btw, are the vast majority of brazil consumer gadgets.