This standard specifies the classification and models, technical requirements, test methods and inspection rules of plastic insulated electrical bushings and accessories used in buildings or structures. This standard applies to circular electrical casings and accessories made of plastic insulating materials used to protect and ensure the wiring of wires or cables in buildings or structures.
JG/T 3001-1992 history
1999JG/T 3050-1998 Insulated electrical bushings and accessories for construction