CHAPTER 12
Remote-Control, Signaling, and Fire Alarm Circuits and Optical Fiber Cables
OVERVIEW
This chapter covers installations of Class 1, Class 2, and Class 3 remote-control, signaling, and power-limited circuits, power-limited and nonpower-limited fire alarm circuits, and optical fiber cables. All of these subjects are covered in Chapter 7 of the National Electrical Code® (NEC®), and because they represent special conditions, the general rules of the first four chapters of the NEC are modified in significant ways. The special conditions for remote-control, signaling, fire alarm, and optical fibers are based on two primary differences from the general conditions of the Code: their uses and their energy limitations. Understanding the special ...
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