Requirements and preferred nominal thicknesses for 13 types of sheet.
BS 3953:1990 history
2004BS EN 60893-2:2004 Insulating materials - Industrial rigid laminated sheets based on thermosetting resins for electrical purposes - Methods of test
1995BS EN 60893-2:1995 Specification for industrial rigid laminated sheets based on thermosetting resins for electrical purposes - Methods of test