Article 760 tells us how to install wiring and equipment for fire alarm systems ... or raceway as PLFA circuits — if the Class 2 circuit conductor insulation isn't less than that required for the PLFA ...

Chapter 12 prohibits T-tapping of all Class A and X circuits and Class B circuits with non ... from the maximum number of fire alarm conductors in a box to how wire must be secured when run ...

Greg Kessinger is SD&I’s fire alarm ... of wiring/pathway “Class” designations has been found in Chapter 12. Initiating device circuits were limited to Class A and Class B, and could be ...