Cable, Raceway, and Enclosure Requirements

Question 1

All building wiring must be enclosed in a cable, conduit, wireway, or raceway.

Answer 1

TRUE

Question 2

-conductors are snaked through conduit or tubing, are laid in a
wireway, or are contained in cables, and
-secured to structural framing.

Answer 2

During installation

Question 3

must be exercised in placing conductors, as conductors and
insulation can be easily damaged.

Answer 3

Care

Question 4

_______ that are run through a raceway must have sufficient
_________ to prevent overheating.

Answer 4

Conductors, open -air space

Question 5

The number of current-carrying conductors
that can run through a raceway is _________ by
______.

Answer 5

limited, code

Question 6

A __________ found in a
raceway Is any ungrounded conductor or
grounded conductor.

Answer 6

current-carrying conductor

Question 7

___________ (bare or green
colored) and _______ are not current carrying and are not counted.

Answer 7

Equipment grounding, shared neutral conductors

Question 8

Rigid conduit and tubing

Answer 8

• rigid metal and nonmetallic conduit
• IMC
• EMT
• ENT

Question 9

are favorite raceway materials used to protect conductors in all
types of buildings.

Answer 9

Rigid conduit and tubing

Question 10

it is available in ________, therefore, must be _______ to
accommodate changes in direction.

Answer 10

Ridgid conduit and tubing, straight lengths, bent

Question 11

bends must be made no smaller than the minimum radius
specified by code, about _________ the conduit diameter.

Answer 11

6 to 8 times

Question 12

conduit and tubing can have up to _________ or the
equivalent ________ in one run.

Answer 12

four 90° bends, 360° total

Question 13

In runs requiring more bends, a __________ is added in the run
assist in pulling conductors and to allow access.

Answer 13

Pull box

Question 14

• flexible metal conduit
• liquid tight flexible metal
• nonmetallic conduit

Answer 14

Flexible conduit

Question 15

offers the advantage of easier installation and can be
salvaged easily when circuits are rearranged.

Answer 15

Flexible conduit

Question 16

It is used where mechanical protection is needed and
easy relocation of equipment is desired.
It can have up to four 90° bends or the equivalent (360°
total) in one run.

Answer 16

Flexible conduit

Question 17

_________ should be supported to prevent _______ against structure and to
avoid _______ its end fittings.

Answer 17

Conduit, wearing away, stressing

Question 18

______ and ______ must be supported within _____
of a box or other connection and at intervals of ______
(about 3 m).

Answer 18

Rigid conduit, tubing, 3 ft, 10 ft

Question 19

can be used as the
grounding conductor.

Answer 19

Continuous, metal conduit

Question 20

must be supported every _______ (1.35
m) and within _____ (300 mm) of a box, except up to _______ (about 1 m) is allowed at usage points where
flexibility is required (e.g., a pump motor or air
conditioner condensing unit) and 6 ft (about 2 m) sy Ps
between a recessed light fixture and a box.

Answer 20

Flexible conduit, 4 to 6 in, 12 in, 36
in,

Question 21

___ and ___ can be used as grounding
conductor if it is continuous and_ properly
bonded.

Answer 21

IMC, EMT

Question 22

It is required for flexible conduit.
lt can be bare or insulated.

Answer 22

Grounding conductor

Question 23

Cannot be use as the grounding conductor.

Answer 23

Rigid nonmetallic conduit and tubing (ENT)

Question 24

Manufactured from __________ that have
very high rates of ___________ (over 6 in
for a 100°F temperature change per 100 ft/over
300 mm in a 50°C temperature change per 30
mM).

Answer 24

Rigid nonmetallic conduit and tubing (ENT), thermoplastics, thermal expansion

Question 25

Permitted in single- and multifamily dwelling units and some other buildings.

Answer 25

Nonmetallic-sheathed cable (NM and NMC)

Question 26

____ and _____ must be supported every 4-6(1.35 m) and within 12 in (300 Mm) of a box.

Answer 26

NM, NMC

Question 27

ls for use in dry, indoor applications.

Answer 27

Armored cable (AC)

Question 28

Bends are limited to no less than five times the diameter.

Answer 28

Armored cable (AC)

Question 29

________ and _______ should be installed away from locations where building occupants might use it as a handhold or footstep.

Answer 29

Conduit, cable

Question 30

_________ should be provided at the lowest point in a conduit run.

Answer 30

Drain holes

Question 31

________ and ________ should be carefully removed to prevent damage to conductor insulation.

Answer 31

Drilling, culling burrs

Question 32

cannot be embedded in masonry, concrete, or plaster.

Answer 32

Armored cable (AC)

Question 33

All ____________ must be made in a _______ such as panelboard, junction, or device box, fixture, or appliance.

Answer 33

electrical connections, protective enclosure

Question 34

All electrical connections must be made in a protective enclosure such as ___________________________________

Answer 34

panelboard, junction, or device box, fixture, or appliance.

Question 35

Every switch, outlet, and connection must be contained in an __________ and every lighting fixture must be mounted in a _______.

Answer 35

electrical box, box

Question 36

Every ______________ must be contained in an electrical box and every _________ must be mounted in a box.

Answer 36

switch, outlet, and connection, lighting fixture

Question 37

All wirings must begin or terminate at a ________ or in a box that is housing switch, luminaire connection, receptacle, conductor junction, or some similar terminal fitting.

Answer 37

panelboard

Question 38

______________ must be mounted so that the blank cover plate is visible and readily accessible.

Answer 38

Junction boxes

Question 39

There are requirements that specify that a certain type of electrical box be installed for a specific purpose.

Answer 39

FALSE

Question 40

Normally installed overhead for lightning installation.

Answer 40

Octagon and round boxes for lighting outlets

Question 41

The ______ and ________ of conductors to be installed in a box influences selection of type of box and box size.

Answer 41

size, number

Question 42

the more conductors and/or the conductor size, the bigger the box must be.

Answer 42

TRUE

Question 43

The capacity of a box, in cubic inches, is determined by its ____________

Answer 43

length, width, and depth.

Question 44

conductor that runs through the box is counted as two conductor and each conductor that terminates in the box counts as one.

Answer 44

FALSE

Question 45

________ and _____ that do not leave the box, such as an _________ wire, are not counted.

Answer 45

Fixture wires, conductors, internal grounding

Question 46

One conductor is deducted for one or more grounding conductors that enter the box.

Answer 46

TRUE

Question 47

Conductors in an electrical box must have sufficient open air space to prevent overheating.

Answer 47

TRUE