Chapter 3

Flexible Metallic Tubing: Type FMT Part I. General Scope. This article covers the use, installation, and construction specifications for flexible metallic tubing (FMT) and associated fittings. Definition. Flexible Metallic Tubing (FMT). A metal raceway that is circu‐ lar in cross section, flexible, and liquidtight without a nonme‐ tallic jacket. 360.6 Listing Requirements. FMT and associated fittings shall be listed. Part II. Installation… read more »

Electrical Metallic Tubing: Type EMT Part I. General Scope. This article covers the use, installation, and construction specifications for electrical metallic tubing (EMT) and associated fittings. Definition. Electrical Metallic Tubing (EMT). An unthreaded thinwall raceway of circular cross section designed for the physical protection and routing of conductors and cables and for use as an equipment grounding conductor… read more »

Liquidtight Flexible Nonmetallic Conduit: Type LFNC Part I. General Scope. This article covers the use, installation, and construction specifications for liquidtight flexible nonmetallic conduit (LFNC) and associated fittings. Definition. Liquidtight Flexible Nonmetallic Conduit (LFNC). A raceway of circular cross section of various types as follows: A smooth seamless inner core and cover bonded together and having one… read more »

Reinforced Thermosetting Resin Conduit: Type RTRC Part I. General Scope. This article covers the use, installation, and construction specification for reinforced thermosetting resin conduit (RTRC) and associated fittings.Informational Note: Refer to Article 352 for Rigid Polyvinyl Chloride Conduit: Type PVC, and Article 353 for High Density Polyethylene Conduit: Type HDPE. Definition. Reinforced Thermosetting Resin Conduit (RTRC). A… read more »

Nonmetallic Underground Conduit with Conductors: Type NUCCPart I. General Scope. This article covers the use, installation, and construction specifications for nonmetallic underground conduit with conductors (NUCC). Definition. Nonmetallic Underground Conduit with Conductors (NUCC). A factory assembly of conductors or cables inside a nonmetal‐ lic, smooth wall raceway with a circular cross section. Aboveground, except as prohibited in… read more »

High Density Polyethylene Conduit: Type HDPE Conduit Part I. General Scope. This article covers the use, installation, and construction specifications for high density polyethylene (HDPE) conduit and associated fittings.Informational Note: Refer to Article 352 for Rigid Polyvinyl Chloride Conduit: Type PVC and Article 355 for Reinforced Thermosetting Resin Conduit: Type RTRC. Definition. High Density Polyethylene (HDPE)… read more »

Rigid Polyvinyl Chloride Conduit: Type PVC Part I. General Scope. This article covers the use, installation, and construction specifications for rigid polyvinyl chloride conduit (PVC) and associated fittings.Informational Note: Refer to Article 353 for High Density Poly‐ ethylene Conduit: Type HDPE, and Article 355 for Reinforced Thermosetting Resin Conduit: Type RTRC. Definition. Rigid Polyvinyl Chloride Conduit… read more »

Liquidtight Flexible Metal Conduit: Type LFMC Part I. General Scope. This article covers the use, installation, and construction specifications for liquidtight flexible metal conduit (LFMC) and associated fittings. Definition. Liquidtight Flexible Metal Conduit (LFMC). A raceway of circular cross section having an outer liquidtight, nonmetallic, sunlight-resistant jacket over an inner flexible metal core with associated couplings, connectors,… read more »

Flexible Metal Conduit: Type FMC Part I. General 348.1 Scope. This article covers the use, installation, and construction specifications for flexible metal conduit (FMC) and associated fittings. Part II. Installation 348.10 Uses Permitted. FMC shall be permitted to be used in exposed and concealed locations. 348.12 Uses Not Permitted. FMC shall not be used in the following: In… read more »

Rigid Metal Conduit: Type RMC Part I. General Scope. This article covers the use, installation, and construction specifications for rigid metal conduit (RMC) and associated fittings. Definition. Rigid Metal Conduit (RMC). A threadable raceway of circular cross section designed for the physical protection and routing of conductors and cables and for use as an equipment ground‐ ing… read more »