American Petroleum Institute API RP 500, "Recommended Practice for Classification of Locations for Electrical Installations at Petroleum Facilities."

ANSI/IEEE 43 - "IEEE Recommended Practice for Testing Insulation of Rotating Machinery."

ANSI/ISA-12.01.01-1999 "Definitions and Information Pertaining to Electrical Apparatus in Hazardous (Classified) Locations."

ANSI/ISA-84.00.01-2004 "Functional Safety: Safety Instrumented Systems for the Process Industry Sector."

ANSI/ISA-84.01-1996 "Application of Safety Instrumented System for the Process Industries."

ANSI/UL 913 "Standard for Intrinsic Safe Apparatus and Associated Apparatus for Use in Class I, II, III, Division I Hazardous (Classified) Locations."

IEC -61010 - "Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use."

IEC 61508, "Functional Safety of Electrical/Electronic/Programmable Electronic Safety-Related Systems."

IEEE 95 - "IEEE Recommended Practice for Insulation Testing of Large AC Rotating Machinery with High DC Voltage."

ISA-RP12.4-1996 "Pressurized Enclosures."

ISA-RP12.06.01-2003 "Recommended Practice for Wiring Methods for Hazardous (Classified) Locations Instrumentation Part I: Intrinsic Safety."

ISA-12.10-1998 "Area Classification in Hazardous (Classified) Dust Locations."

ANSI/ISA-12.12.01-2000 "Nonincendive Electrical Equipment for Use in Class I and II, Division 2 and Class III, Divisions 1 and 2 Hazardous (Classified) Locations."

ISA-5.4 -1991 - "Instrument Loop Diagrams."

NEC Article 110-127a, "Guarding of Live Parts."

NEC Article 500, "Hazardous (Classified) Locations," defines division-based area classification.

NEC Articles 501-555 further explain the requirements for the use of electrical equipment in hazardous (classified) areas.

NEC Article 505, "Class I, Zone 0, 1, and 2 Locations" defines the zone-based area classification.

NFPA-70E, "Standard for Electrical Safety Requirements for Employee Workplaces," NFPA-70, "The National Electrical Code" (NEC).

NFPA 79, Electrical Standard for Industrial Machinery,...