Chapter 3

Intermediate Metal Conduit: Type IMC Part I. General Scope. This article covers the use, installation, and construction specifications for intermediate metal conduit (IMC) and associated fittings. Definition. Intermediate Metal Conduit (IMC). A steel threadable raceway of circular cross section designed for the physical protection and routing of conductors and cables and for use as an equip‐ ment… read more »

Underground Feeder and Branch-Circuit Cable: Type UF Part I. General Scope. This article covers the use, installation, and construction specifications for underground feeder and branch-circuit cable, Type UF. Definition. Underground Feeder and Branch-Circuit Cable, Type UF. A factory assembly of one or more insulated conductors with an integral or an overall covering of nonmetallic material suitable for… read more »

Service-Entrance Cable: Types SE and USE Part I. General Scope. This article covers the use, installation, and construction specifications of service-entrance cable. Definitions. Service-Entrance Cable. A single conductor or multiconductor assembly provided with or without an overall covering, primar‐ ily used for services, and of the following types: Type SE. Service-entrance cable having a flame-retardant, moisture-resistant covering. Type… read more »

Power and Control Tray Cable: Type TCPart I. General Scope. This article covers the use, installation, and construction specifications for power and control tray cable, Type TC. Definition.Power and Control Tray Cable, Type TC. A factory assembly of two or more insulated conductors, with or without associated bare or covered grounding conductors, under a nonmetallic jacket.N336.6 Listing… read more »

Nonmetallic-Sheathed Cable: Types NM, NMC, and NMS Part I. General Scope. This article covers the use, installation, and construction specifications of nonmetallic-sheathed cable. Definitions. Nonmetallic-Sheathed Cable. A factory assembly of two or more insulated conductors enclosed within an overall nonme‐ tallic jacket. Type NM. Insulated conductors enclosed within an overall nonmetallic jacket. Type NMC. Insulated conductors enclosed within an… read more »

ARTICLE 332 Mineral-Insulated, Metal-Sheathed Cable: Type MI Part I. General Scope. This article covers the use, installation, and construction specifications for mineral-insulated, metal- sheathed cable, Type MI. Definition. Mineral-Insulated, Metal-Sheathed Cable, Type MI. A factory assembly of one or more conductors insulated with a highly 332.6 ARTICLE 332 — MINERAL-INSULATED, METAL-SHEATHED CABLE: TYPE MI compressed refractory mineral insulation… read more »

Metal-Clad Cable: Type MC 328.120 Marking. Medium voltage cable shall be marked as required by 310.120. Part I. General Scope. This article covers the use, installation, and construction specifications of metal-clad cable, Type MC. Definition. Metal Clad Cable, Type MC. A factory assembly of one or more insulated circuit conductors with or without optical fiber members enclosed in… read more »

Medium Voltage Cable: Type MV Table 326.80 Ampacity of Type IGS Cable Size (kcmil) Amperes Size (kcmil) Amperes 250 119 2500 376 500 168 3000 412 750 206 3250 429 1000 238 3500 445 1250 266 3750 461 1500 292 4000 476 1750 315 4250 491 2000 336 4500 505 2250 357 4750 519 326.112… read more »

Integrated Gas Spacer Cable: Type IGS Part I. General Scope. This article covers the use, installation, and construction specifications for integrated gas spacer cable, Type IGS. Definition. Integrated Gas Spacer Cable, Type IGS. A factory assembly of one or more conductors, each individually insulated and enclosed in a loose fit, nonmetallic flexible conduit as an inte‐ grated… read more »

Flat Conductor Cable: Type FCC Part I. General Scope. This article covers a field-installed wiring system for branch circuits incorporating Type FCC cable and associ‐ ated accessories as defined by the article. The wiring system is designed for installation under carpet squares. Definitions. Bottom Shield. A protective layer that is installed between the floor and Type FCC… read more »