SAI AS 1076.7
SA AS 10767 1977-JAN-01 Code of Practce for Selecton nstallaton and Mantenance of Electrcal Apparatus and Assocated Equpment for Use n Explosve Atmospheres Other Than Mnng Applcatons Part 7 Apparatus wth Type of Protecton 'n' - Non-Sparkng Apparatus