4 ms·
Last time i checked the middle plug was optional, so no, not polarized. granted, the last time i looked at the paper was 2,5 years ago and there was still a lo
by gcb 14y ago
Last time i checked the middle plug was optional, so no, not polarized.
granted, the last time i looked at the paper was 2,5 years ago and there was still a lot of allowances for transition.
And i'm certain the Nokia adapters sold via local phone operators only have two plugs.
- ricardobeat 14y agoNot every appliance needs grounding[1], in those that do the ground pin is mandatory and so the plug is polarized. [1] http://en.wikipedia.org/wiki/Appliance_classes http://en.wikipedia.org/wiki/Appliance_classes
- gcb 14y agoRemember 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.
- deleted 14y ago[deleted]