AS 1939 Supp 1-1990
Displays in text and diagrams the meanings of the two characteristic numerals of the IP Code specified in AS 1939-1990, in particular the dual protection of persons and of equipment indicated by the first numeral and the protection against ingress of water indicated by the second numeral. It is intended as an aid to be read in conjunction with AS 1939. Refers to AS 1939 Supplement 2.