3.20-3.99 Definitions

Question 1

A factory assembly of one or more insulated conductors with an integral or overall covering of nonmetallic material suitable for direct burial on earth

Answer 1

Underground Feeder and Branch-circuit cable: Type UF

Question 2

Type UF: Bending Radius

Inner edge radius shall not be less than ______ the diameter of the cable.

Answer 2

5 times

Question 3

The ampacity of Type UF cable shall be that of ____.

Answer 3

60 degrees celcius

Question 4

Type UF:

The conductors shall be of sizes _______ or ______ through _______.

Answer 4

2.0 mm sqrd. ( 1.6 mm dia.) copper
3.5 mm sqrd. ( 2.0 mm dia.) aluminum
100 mm sqrd.

Question 5

The conductors of Type UF shall be of __________ types and where installed as a substitute wiring for NM cable, the conductor insulation shall be rated _____

Answer 5

moisture-resistant

90 degree celcius

Question 6

A steel threadable raceway of circular cross section for physical protection and routing of conductors and for use as an equipment grounding conductor when installed with its integral or associated coupling and appropriate fittings.

Answer 6

Intermediate Metal Conduit : Type IMC

Question 7

A threadable raceway of circular cross section for physical protection and routing of conductors and for use as an equipment grounding conductor when installed with associated couplings and appropriate fittings.

Answer 7

Rigid Metal Conduit: Type RMC

Question 8

A raceway of circular cross section made of helically wound, formed interlocked metal strip.

Answer 8

Flexible Metal Conduit : Type FMC

Question 9

A raceway of circular cross section having an outer liquidtight, nonmetallic, sunlight-resistant jacket over an inner flexible metal core with associated couplings, connectors and fittings for the installation of electrical conductors.

Answer 9

Liquidtight Flexible Metal Conduit: Type LFMC

Question 10

Type PVC

Answer 10

Rigid Polyvinyl Chloride Conduit

Question 11

A nonmetallic raceway of circular cross section with associated coupling, connectors and fittings for the installation of electrical conductors.

Answer 11

High Density Polyethylene Conduit: Type HDPE

Question 12

A factory assembly of conductors or cables inside a nonmetallic smooth wall raceway of circular cross section.

Answer 12

Nonmetallic Underground Conduit with Conductors (NUCC)

Question 13

A rigid nonmetallic raceway of circular cross section with integral or associated couplings, connectors and fittings for the installation of electrical conductors.

Answer 13

Rigid Thermosetting Resin Conduit: Type RTRC

Question 14

Types of Liquidtight Flexible Nonmetallic Conduit: Type LFNC

Answer 14

LFNC -A
LFNC -B
LFNC -C

Question 15

LFNC-A

Answer 15

A smooth seamless inner core and cover bonded together

Question 16

LFNC-B

Answer 16

A smooth inner surface with integral reinforcement within the raceway wall

Question 17

LFNC-C

Answer 17

A corrugated internal and external surface without reinforcement within the raceway wall

Question 18

An unthreaded thin wall raceway of circular cross section for physical protection and routing of conductors and for use as an equipment grounding conductors when installed utilizing appropriate fittings.

Answer 18

Electrical metallic tubing: Type EMT

Question 19

A metal raceway of circular in cross section,flexible and liquidtight without nonmetallic jacket.

Answer 19

Flexible Metallic Tubing; Type FMT

Question 20

A nonmetallic, pliable, corrugated raceway of circular cross section with integral or associated couplings , connectors and fittings for the installation of electrical conductors.

Answer 20

Type ENT: Electrical Nonmetallic Tubing

Question 21

usually made of material that is resistant to moisture and chemical atmospheres and is flame retardant

Answer 21

Type ENT

Question 22

a raceway that can be bent by hand with reasonable force but without other assistance

Answer 22

Pliable raceway

Question 23

A sheet metal enclosure used to supplement wiring spaces with hinged or removable covers for housing ad protecting of electrical wires, cable and bus bars

Answer 23

Metal Auxiliary Gutter

Question 24

A flame-retardant, nonmetallic enclosure used to supplement wiring spaces with hinged or removable cover for housing and protecting of electrical wires, cables and bus bars.

Answer 24

Nonmetallic Auxiliary Gutter

Question 25

A raceway consisting of metal enclosure containing factory mounted bare or insulated conductors, usually aluminum or copper bars, rods or tubes

Answer 25

Busway

Question 26

An assembly of units or sections with insulated conductors having associated fittings and connectors forming structural system to securely fasten or support conductor and conductor terminations

Answer 26

Cable bus

Question 27

This assembly is designed to carry fault current and withstand the magnetic forces of such current

Answer 27

Cable bus

Question 28

A single, enclosed tubular space in a floor made of precast cellular concrete slabs

Answer 28

Cell

Question 29

Transverse metal raceways for electrical conductors, providing access to predetermined cells permitting the installation of electrical conductors from a distribution center to the floor cells

Answer 29

Header

Question 30

The hollow spaces of cellular metal floors, together with suitable fittings, that may be approved as enclosed channel for electrical conductors.

Answer 30

Cellular Metal Floor Raceways

Question 31

Sheet metal troughs with hinged or removable covers for housing and protecting of electrical wires and cables

Answer 31

Metal Wireways

Question 32

Flame retardant, nonmetallic troughs with removable covers for housing and protecting of electrical wires and cables

Answer 32

Nonmetallic Wireways

Question 33

A listed assembly of two, three or four insulated conductors within a nonmetallic jacket, an extruded thermoplastic covering and a sealed nonmetallic covering. The classification includes surface extension intended for mounting directly on the surface of walls or ceilings and concealed with paint, texture and etc.

Answer 33

Concealed Nonmetallic Extensions

Question 34

An assembly of two insulated circuit conductors within a nonmetallic jacket or an extruded thermoplastic covering. Surface extensions intended for mounting directly on the surface of walls or ceilings

Answer 34

Nonmetallic Extensions

Question 35

A metal raceway that is intended to be mounted or suspended from a structure, with associated accessories

Answer 35

Strut-type Channel Raceway

Question 36

A metal raceway intended to be mounted on the surface of a structure, with associated couplings

Answer 36

Surface Metal Raceways

Question 37

A nonmetallic raceway that is intended to be mounted on the surface of a structure , with associated couplings

Answer 37

Surface Nonmetallic Raceways

Question 38

A raceway and associated components designed and intended for installation beneath or flush with the surface of a floor for the installation of cables and electrical conductors.

Answer 38

Underfloor Raceways

Question 39

A unit or assembly of units or sections and associated fittings forming a structural system used to securely fasten and support cables and raceways

Answer 39

Cable Trays

Question 40

A fabricated assembly of insulated conductors in a flexible interlocked metallic armor

Answer 40

Type AC; Armored Cable

Question 41

Type EMT is generally made of

Answer 41

steel with protective coatings or aluminum

Question 42

An assembly of parallel conductors formed integrally of insulating material web specifically designed for field installations of surface metal raceway

Answer 42

Type FC: Flat Cable Assembly

Question 43

A protective layer that is installed between the floor and Type FCC flat conductor cable that protects the cable from physical damage

Answer 43

Bottom shield

Question 44

A connector that joins the Type FCC cables without using junction box

Answer 44

Cable Connector

Question 45

A complete wiring system for branch circuit designed for installation under carpet squares

Answer 45

FCC System

Question 46

A insulator designed to electrically insulate the end of Type FCC cable.

Answer 46

Insulating End

Question 47

A means of connection designed to electrically and mechanically connect a metal shield to another metal shield, to a receptacle housing or a self-contained device or to a transition assembly

Answer 47

Metal Shield Connection

Question 48

A grounded metal shield covering under carpet components of Type FCC system for the purposes of protection against physical damage

Answer 48

Top Shield

Question 49

An assembly that facilitates the connection of FCC wiring system to other wiring system by incorporating (1) means for electrical interconnection (2) suitable covering for providing electrical safety and protection against physical damage

Answer 49

Transition Assembly

Question 50

Three or more flat copper conductor placed edge to edge and separated and enclosed within an insulating assembly

Answer 50

Type FCC Cable

Question 51

A factory assembly of one or more conductors, each individually insulated and enclosed in a loose fit, nonmetallic flexible conduit as an integrated gas spacer cable rated 0 through 600V.

Answer 51

Integrated Gas Spacer Cable | Type IGS

Question 52

A single or multiconductor solid dielectric insulated cable rated 2001 V or higher.

Answer 52

Medium Voltage Cable | Type MV

Question 53

A factory assembly of one or more insulated circuit conductor with or without optical fiber members enclosed in an armor of interlocking metal tape or a smooth or a corrugated metallic sheath

Answer 53

Metal Clad Cable | Type MC

Question 54

A factory assembly of one or more insulated conductors with a highly compressed refractory mineral insulation and enclosed in a liquidtight and gastight continuous copper or alloy steel sheath

Answer 54

Mineral Insulated Metal Sheathed Cable | Type MI

Question 55

A factory assembly of two or more insulated conductors enclosed within an overall nonmetallic jacket

Answer 55

Nonmetallic-Sheathed Cable | Type NM, NMS, NMC

Question 56

A factory assembly of two or more insulated conductors, with or without associated bare or covered grounding conductors, under a nonmetallic jacket

Answer 56

Power and Control Tray Cable | Type TC

Question 57

A single conductor or multiconductor assembly provided with or without overall covering, primarily used for services

Answer 57

Service Entrance Cable | Type SE

Question 58

Service entrance cable having a flame-retardant, moisture resistant covering.

Answer 58

Type SE

Question 59

Service entrance cable identified for underground use, having a moisture-resistant covering but not required to have a flame-retardant covering

Answer 59

Type USE

Question 60

Insulated conductors enclosed within an overall nonmetallic jacket.

Answer 60

Type NM

Question 61

Insulated conductors enclosed within an overall, corrosion-resistant, nonmetallic jacket.

Answer 61

Type NMC

Question 62

Insulated power or control conductors with signaling, data and communication conductors within an overall nonmetallic jacket.

Answer 62

Type NMS