JIS T 1021:2019 specifies the requirements for hospital grade outlet-sockets and plugs which are used for the connection of medical electrical equipment and an electric circuit of a.c. 100 V at a frequency of 50 Hz or 60 Hz. This Standard does not cover multiple taps and cord connector bodies, and hospital grade outlet-sockets and plugs for special service such as floor mount type, waterproof type and explosion proof type.