Originated in Australia in part as AS 1301.426s—1988 and AS 1301.427s—1988 and in New Zealand in part as NZS/AS 1301.P426s:1988 and NZS/AS 1301.427s:1988.Previous edition AS/NZS 1301.426s:1994.Jointly revised and designated as AS/NZS 1301.426s:2015. Originated in Australia in part as AS 1301.426s-1988 and AS 1301.427s-1988 and in New Zealand in part as NZS/AS 1301.P426s:1988 and NZS/AS 1301.427s:1988. Previous edition AS/NZS 1301.426s:1994. Jointly revised and designated as AS/NZS 1301.426s:2015.