Type cl2r/cl3r cable can be used for both class 2 and 3 circuits and Circuits nec limited Class a and class b type wiring/fire alarm safety system
Article 100 Class 1, 2 and 3 Circuits.
Class alarm wiring fire system safety type Article 100 class 1, 2 and 3 circuits. Circuits signaling
CLASS A AND CLASS B TYPE WIRING/FIRE ALARM SAFETY SYSTEM - YouTube
Article 100 Class 1, 2 and 3 Circuits.
Type CL2R/CL3R cable can be used for both Class 2 and 3 circuits and
