(F) Circuit Integrity (CI) Cable or Electrical Circuit Protective System
Informational Note No. 1: One method of defining circuit integrity (CI) cable or an electrical circuit protective system is by establishing a minimum 2-hour fire-resistive rating when tested in accordance with ANSI/UL 2196-2017, Standard for Fire Test for Circuit Integrity of Fire -Resistive Power, Instrumentation, Control and Data Cables.
Informational Note No. 2: UL guide information for electrical circuit protective systems (FHIT) contains information on proper installation requirements to maintain the fire rating.