Ch 12 - Raceway Installation
Nonmetallic sheathed cable
_______________ is permitted to be run in a raceway.
nonconductive
A ________ fish tape should be used when pulling conductors through an installed conduit system and into an energized loadcenter.
offset
A(n) __________ bend is a conduit bend that is made with two equal-degree bends in such a way so the conduit changes elevation and avoids an obstruction.
6
Any installation of Liquidtight Flexible Metal Conduit over _____________ feet in length requires the installation of a grounding conductor.
3
ENT must be supported at intervals not exceeding __________ feet.(General Rule)
3' or 36"
Electrical Metallic Tubing (Type EMT) must be secured within _______ of every outlet box, junction box, cabinet, and conduit body.
360
The number of bends in a conduit run from one box to another box cannot exceed a total of ____________ degrees.
NM
The securing and supporting requirements for Flexible Metal Conduit are the same as those for Type _____ cable.
same
The securing and supporting requirements for liquidtight flexible metal conduit (Type LFMC) are the same or different as Type NM cable,Type AC cable and Flexible Metal Conduit.
saddle
Three-point and four-point bends are types of __________ bends.
Informative Annex C
To find the maximum number of conductors of the same size and insulation type permitted in various types and sizes of conduit, you would look in ________ of the National Electrical Code.
back-to-back
A(n) __________ bend is a conduit bend formed by two 90-degree bends with a straight length of conduit between the two bends.
saddle
A(n) __________ bend is a conduit bend that results in a conduit going over an object that is blocking the path of the run.
10'
EMT must be supported at least every __________ along the run. (General Rule)
10
RMC, IMC, EMT, and PVC conduits come in standard __________ foot lengths.
10
Rigid Metal Conduit must be supported at least every __________ feet along a conduit run. (General Rule)
36"
Rigid Metal Conduit must be supported within __________ of outlet boxes, junction boxes, cabinets, and conduit bodies. (General Rule)
smaller
Schedule 80 rigid PVC conduit has a ________ inside diameter than Schedule 40 rigid PVC conduit.
300.9
Section ________ states that when installing conduits above grade in a wet location (like outdoors on the side of a house), the interior of the conduit is considered a wet location.
box offset
The conduit bend used on the conduit ends when the conduit enters a box or other electrical enclosure that is surface mounted is called a(n) _________________________ bend.
4, 5
The maximum number of 14 AWG conductors with THHN insulation that you could install in a 3/8" trade size FMC is __________ if the connector fittings are inside or __________ if the connector fittings are outside. (assume the use of a grounding conductor)
155
The metric designator for 6" trade size rigid metal conduit is __________.
Stub-up stub up stub
The most common conduit bend is a 90-degree bend also known as a(n) ____________.
blue
A(n) __________ plastic cap on the ends of rigid metal conduit designates inch trade sizes.
6'
According to Underwriters Laboratories, lengths of Flexible Metal Conduit longer than __________ have not been judged suitable for grounding purposes.
10', 3'
The NEC considers horizontal runs of EMT supported by openings through framing members at intervals not greater than ______ and securely fastened within _____ of termination points to be properly supported.
EMT
The NEC defines __________ as an unthreaded thinwall raceway of circular cross section designed for the physical protection and routing of conductors and cables.
insulated bushing
The NEC requires that a(n) __________ be used for the protection of conductors sized 4 AWG and larger installed in conduit.
arrow
The __________ on a conduit hand bender head is where you will place the bending mark when doing a stub-up bend.
star point
The __________ on a conduit hand bender head is where you will place the bending mark when doing the second 90 degree bend of a back-to-back bend.
rim notch
The __________ on a conduit hand bender head is where you will place the middle bending mark when doing a three-point saddle bend.
conduit
The most common types of _________ bodies include L-shaped bodies ("Ells"), t-shaped bodies ("Tees"), and C-shaped bodies ("Cees").
40
When installing more than two conductors in a conduit or tubing, the maximum percentage of fill allowed by the NEC is __________.
31%
Where only two conductors are installed in a raceway, the conduit cannot be filled to more than __________ of the conduit's cross-sectional area.
take-up deduct
___________ is the amount that must be subtracted from a desired stub up height so the bend will come out right. This term relates to the use of EMT benders.
Expansion fittings
_________________ are generally provided in exposed runs of rigid pvc conduit where the run is long, the run is subject to large temperature variations during or after installation and expansion and contraction measures are provided for the building or other structures.
ENT
A separate equipment grounding conductor must always be installed in runs of _____.
16
The metric designator for 1/2" trade size EMT is __________.
take up
__________ is the amount that must be subtracted from a desired stub-up height so the bend will come out right.
