ISA RP60.8 : 1978

1 Scope
2 General
  2.1 Application
  2.2 Compliance
  2.3 Wiring
  2.4 Terminations
  2.5 Sizing conduit and electrical metallic tubing
3 General purpose open wiring
  3.1 General application
  3.2 Raceway
  3.3 Open wiring
  3.4 Safety
  3.5 Working space
4 General purpose enclosed wiring
  4.1 General application
  4.2 Enclosed wiring
5 Hazardous location Class I, Division 2 open wiring
  5.1 General application
  5.2 Raceway
  5.3 Open wiring
  5.4 Seals
6 Hazardous location Class I, Division 2 enclosed wiring
  6.1 General application
  6.2 Enclosed wiring
  6.3 Seals
7 Hazardous location Class I, Division 1 wiring
  7.1 General application
  7.2 Equipment
  7.3 Wiring
  7.4 Seals
  7.5 Terminal box
  7.6 Purging

ISA-RP60.8-1978, Electrical Guide for Control Centers, provides detailed electrical practices specifically for control centers, focusing on wiring methods, safety and compliance with the National Electrical Code® (NEC®), the US electrical safety standard. This recommended practice covers power, control and signal wiring, including color coding, grounding, terminations and conduit sizing. It addresses different environments like general-purpose areas and hazardous locations, offering recommendations for open and enclosed wiring, sealing requirements and equipment enclosures. This guidance helps in designing reliable and organized electrical systems within control centers by clarifying wiring arrangements, identification and protection measures, aiding in managing complexity and maintaining operational integrity across various industrial settings.