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Chapter 3 (eeu) > Cable, Raceway, and Enclosure Requirements > Flashcards

Cable, Raceway, and Enclosure Requirements Flashcards

1
Q

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

A

TRUE

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2
Q

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

A

During installation

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3
Q

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

A

Care

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4
Q

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

A

Conductors, open -air space

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5
Q

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

A

limited, code

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6
Q

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

A

current-carrying conductor

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7
Q

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

A

Equipment grounding, shared neutral conductors

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8
Q

Rigid conduit and tubing

A
  • rigid metal and nonmetallic conduit
  • IMC
  • EMT
  • ENT
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9
Q

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

A

Rigid conduit and tubing

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10
Q

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

A

Ridgid conduit and tubing, straight lengths, bent

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11
Q

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

A

6 to 8 times

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12
Q

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

A

four 90° bends, 360° total

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13
Q

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

A

Pull box

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14
Q
  • flexible metal conduit
  • liquid tight flexible metal
  • nonmetallic conduit
A

Flexible conduit

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15
Q

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

A

Flexible conduit

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16
Q

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.

A

Flexible conduit

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17
Q

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

A

Conduit, wearing away, stressing

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18
Q

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

A

Rigid conduit, tubing, 3 ft, 10 ft

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19
Q

can be used as the
grounding conductor.

A

Continuous, metal conduit

20
Q

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.

A

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

21
Q

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

A

IMC, EMT

22
Q

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

A

Grounding conductor

23
Q

Cannot be use as the grounding conductor.

A

Rigid nonmetallic conduit and tubing (ENT)

24
Q

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).

A

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

25
Q

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

A

Nonmetallic-sheathed cable (NM and NMC)

26
Q

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

A

NM, NMC

27
Q

ls for use in dry, indoor applications.

A

Armored cable (AC)

28
Q

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

A

Armored cable (AC)

29
Q

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

A

Conduit, cable

30
Q

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

A

Drain holes

31
Q

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

A

Drilling, culling burrs

32
Q

cannot be embedded in masonry, concrete, or plaster.

A

Armored cable (AC)

33
Q

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

A

electrical connections, protective enclosure

34
Q

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

A

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

35
Q

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

A

electrical box, box

36
Q

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

A

switch, outlet, and connection, lighting fixture

37
Q

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.

A

panelboard

38
Q

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

A

Junction boxes

39
Q

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

A

FALSE

40
Q

Normally installed overhead for lightning
installation.

A

Octagon and round boxes for lighting outlets

41
Q

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

A

size, number

42
Q

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

A

TRUE

43
Q

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

A

length, width,
and depth.

44
Q

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

A

FALSE

45
Q

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

A

Fixture wires, conductors, internal grounding

46
Q

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

A

TRUE

47
Q

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

A

TRUE

Chapter 3 (eeu) (9 decks)

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