This standard covers the requirements and tests for three-pin two-pole and earthing plugs and socket-outlets of surface and flush type ( shuttered and non-shuttered ) suitable for ac and dc circuits having voltages up to 250 volts.
Note — 2 pin plugs and socket outlets are con-sidered non-standard ( see 0.4 ).
IS 1293-1988 history
1988IS 1293-1988 Specifications for plugs and receptacles rated at 250 volts or not exceeding 16 amps