![]() One of the reasons behind the adoption of that particular design was that it was cheap to make the flat pins could be easily stamped out of sheet brass, in contrast to round pins or thicker rectangular ones used in other countries. Care also should be taken with the 10 A version with the round pin as physically compatible, but electrically incompatible connector used for 277 V 15 A connections is encountered in commercial or industrial settings in the Americas. ![]() ![]() Care should be taken if Argentinian standards or faulty wiring swaps the active and neutral pins. Likewise, it is the first 'socket' from the Earth 'socket' in a clockwise direction when viewing the front of a socket-outlet. The active terminal of the Plug is the first pin from the Earth pin in a clockwise direction when viewed from the wiring side. The latter is rated at only 110 V (since certain foreign 110 V plugs could be inserted into the Socket-Outlet) and may be used on, where two 110 volt 1000 Watt lamps are used in series. Other variants include plug/sockets with a rating of 10 A using a round earth pin, which is used on 'special use' circuits, such as in classrooms and a 110 V 10 A version that has round active & neutral pins with a flat earth pin.
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