Standard sizes for US gauge receptacles are set by the National Electrical Manufacturers Association(NEMA).NEMA customises a number of different categories of receptacles,each with their own specific standard sizes and configurations.

　　In general,the standard sizes of US gauge receptacles vary depending on the category and function of the receptacle.Below is a brief description of some common US gauge receptacle categories and their standard sizes:

　　1.NEMA 1 Series:NEMA 1 Series receptacles are basic ungrounded receptacles typically used for low power household appliances such as table lamps and electronic devices.Their dimensions are approximately 47mm x 26mm x 22mm.

　　2.NEMA 5 Series:The NEMA 5 Series receptacle is a common U.S.-gauge receptacle,also known as a 3-pin receptacle,that provides a 120-volt AC supply.Its dimensions are approximately 48mm x 26mm x 22mm.

　　3.NEMA 6 Series:NEMA 6 Series receptacles are receptacles used to supply high power devices such as furnaces and air conditioners,which supply 240 volts AC.Their dimensions are approximately 48mm x 26mm x 22mm,the same as NEMA 5 receptacles.

　　4.NEMA 10 Series:The NEMA 10 series receptacle is an older type of receptacle that provides 120/240 volt shunt power.Its dimensions are approximately the same as the NEMA 5 receptacle.

　　In addition to the common receptacle types listed above,there are a number of other NEMA-standardised receptacle sizes,such as the NEMA 14 series(for high-power equipment and power tools)and the NEMA L series(for specific industrial applications).

　　It is important to note that the above are just common examples and do not cover all U.S.standard receptacle sizes.In fact,NEMA standard receptacle sizes can vary depending on specific specifications and needs,so it is recommended to check the specific NEMA standard for correct sizing information when purchasing a receptacle or performing an electrical installation.

　　Overall,the standard sizes for US gauge receptacles are based on NEMA standards to ensure that the receptacle fits the appropriate plug and ensures proper electrical connection and reliable performance.Understanding these different types of receptacles and their dimensions can help us make the right choices when shopping for appliances and installing them to ensure proper operation of electrical equipment and reliable use in the home.

　　(Note:The dimensions described in this article are for reference only.Please check with the specific NEMA standards when purchasing and installing electrical outlets).