Historical
ANSI/ISA-RP12.06.01-2003
Recommended Practice for Wiring Methods for Hazardous (Classified) Locations Instrumentation Part 1: Intrinsic Safety
This recommended practice is intended to promote the uniform installation of intrinsically safe systems for hazardous (classified) locations. Information is provided to clarify and explain the requirements of Articles 504 and 505 of the National Electrical Code « (NEC «) ANSI/NFPA 70. (For further information, see Annex A.)
The International Society of Automation [isa]