Chapter 7

Special Conditions


Optical Fiber Cables Insulated Continuous Line-Type Fire Detectors. Insulated continuous line-type fire detectors shall be rated in accordance with 760.179(C), listed as being resistant to the spread of fire in accordance with 760.179(D) through (F), and marked in accordance with 760.179(I), and the jacket compound shall have a high degree of abrasion resistance. • Informational Note:… read more »


Fire Alarm Systems Part I. General760.1 Scope. This article covers the installation of wiring and equipment of fire alarm systems, including all circuits control‐ led and powered by the fire alarm system.Informational Note No. 1: Fire alarm systems include fire detec‐ tion and alarm notification, guard’s tour, sprinkler waterflow, and sprinkler supervisory systems. Circuits controlled and… read more »


Energy Management Systems Scope. This article applies to the installation and opera‐ tion of energy management systems.Informational Note: Performance provisions in other codes establish prescriptive requirements that may further restrict the requirements contained in this article. Definitions. For the purpose of this article, the follow‐ ing definitions shall apply. Control. The predetermined process of connecting, discon‐ necting, increasing,… read more »


Fire-Resistive Cable Systems Scope. This article covers the installation of fire- resistive cables, fire-resistive conductors, and other system components used for survivability of critical circuits to ensure continued operation during a specified time under fire condi‐ tions as required in this Code. Definition.Fire-Resistive Cable System. A cable and components used to ensure survivability of critical circuits for a… read more »


Instrumentation Tray Cable: Type ITC Scope. This article covers the use, installation, and construction specifications of instrumentation tray cable for application to instrumentation and control circuits operating at 150 volts or less and 5 amperes or less. Definition.Type ITC Instrumentation Tray Cable. A factory assembly of two or more insulated conductors, with or without a grounding conductor(s),… read more »


Class 1, Class 2, and Class 3 Remote- Control, Signaling, and Power-Limited Circuits Part I. General Scope. This article covers remote-control, signaling, and power-limited circuits that are not an integral part of a device or of utilization equipment.Informational Note: The circuits described herein are character‐ ized by usage and electrical power limitations that differentiate them from electric… read more »


Circuits and Equipment Operating at Less Than 50 Volts Scope. This article covers installations operating at less than 50 volts, direct current or alternating current. Other Articles. Direct current or alternating-current installations operating at less than 50 volts, as covered in 411.1 through 411.8; Part VI of Article 517; Part II of Article 551; Parts II and… read more »


Direct Current Microgrids Voltage and Frequency Control. The stand-alone supply shall be controlled so that voltage and frequency remain within suitable limits for the connected loads. Part I. General Scope. This article applies to direct current microgrids. Definitions.Direct Current Microgrid (DC Microgrid). A direct current microgrid is a power distribution system consisting of more than one interconnected dc… read more »


Stand-Alone Systems 710.1 Scope. This article covers electric power production sources operating in stand-alone mode. N 710.6 Equipment Approval. All equipment shall be listed or field labeled for the intended use. 710.15 General. Premises wiring systems shall be adequate to meet the requirements of this Code for similar installations supplied by a feeder or service. The wiring on the supply side of the building… read more »


Critical Operations Power Systems (COPS) Informational Note: Text that is followed by a reference in brackets has been extracted from NFPA 1600 -2013, Standard on Disaster/Emergency Management and Business Continuity Programs. Only editorial changes were made to the extracted text to make it consistent with this Code. Part I. General Scope. The provisions of this article apply to the instal‐… read more »