(PEC-Chapter3) Sheet2-Part3

Card Set Information

Author:
Camskie
ID:
305235
Filename:
(PEC-Chapter3) Sheet2-Part3
Updated:
2015-08-03 08:52:13
Tags:
camille
Folders:

Description:
PEC Chapter 3 Sheet 2
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user Camskie on FreezingBlue Flashcards. What would you like to do?


  1. Type LFNC-B shall be
    securely fastened and supported in accordance with one of the following:

    (1)
    Where installed in lengths exceeding __ mm, the conduit shall be securely
    fastened at intervals not exceeding __ mm and within __ mm on each side of every
    outlet box, junction box, cabinet, or fitting.

    (2) Securing or supporting of
    the conduit shall not be required where it is fished, installed in lengths not
    exceeding __ mm at terminals where flexibility is required, or installed in
    lengths not exceeding __ mm from a luminaire (fixture) terminal connection
    for tap conductors to luminaires (lighting fixtures) permitted in 4.10.11.4(c)
    • 1 800
    • 900
    • 300
    • 900
    • 1800
  2. LFNC shall be marked
    at least every __ mm in accordance with 1.10.1.21
    600
  3. ______is an unthreaded thin wall raceway of circular
    cross section designed for the physical protection and routing of conductors
    and cables and for use as an equipment grounding conductor when installed
    utilizing appropriate fittings
    Eletcrical Metallic Tubing (EMT)
  4. EMT smaller than
    raceway size __mm shall not be used. The maximum size of EMT shall be raceway
    size __mm
    • 15
    • 100
  5. EMT shall not be ___
    threaded
  6. EMT shall be securely
    fastened in place at least every __ mm. In addition, each EMT run between
    termination points shall be securely fastened within __ mm of each outlet box,
    junction box, device box, cabinet, conduit body, or other tubing termination
    • 3 000
    • 900
  7. Exception No. 1: Fastening of unbroken lengths shall be
    permitted to be increased to a distance of __ mm where structural members do
    not readily permit fastening within __ mm
    • 1 500
    • 900
  8. EMT shall be clearly
    and durably marked at least every __ mm as required in the first sentence of
    1.10.1.21
    3 000
  9. ___ is a raceway that
    is circular in cross section, flexible, metallic, and liquidtight without a
    non-metallic jacket
    Flexible Metallic Tubing (FMT)
  10. FMT shall not be used  in lengths over __ mm
    1 800
  11. FMT smaller than
    raceway size __mm shall not be used. The maximum size of FMT shall be raceway
    size __mm
    • 15
    • 20
  12. ______is a nonmetallic
    pliable corrugated raceway of circular cross section with integral or
    associated couplings, connectors, and fittings for the installation of electric
    conductors
    Electrical Nonmetallic Tubing (ENT)
  13. For the purpose of
    this article, the first floor of a building shall be that floor that has __
    percent or more of the exterior wall surface area level with or above finished
    grade
    50
  14. The use of ENT and
    fittings shall be permitted in the following: (1) In any building not exceeding
    three floors above grade as follows: a. For exposed work, where not prohibited
    by 3.62.2.3 b. Concealed within walls, floors, and ceilings (2) In any building
    exceeding three floors above grade, ENT shall be concealed within walls,
    floors, and ceilings where the walls, floors, and ceilings provide a thermal
    barrier of material that has at least a __- minute finish rating as identified
    in listings of fire-rated assemblies
    15
  15. ENT shall not be
    usedWhere subject to ambient temperatures in excess of __°C  unless listed otherwise
    50
  16. ENT smaller than raceway size __mm shall not be used. The maximum size of ENT shall be raceway size __mm
    • 15
    • 50
  17. ENT shall be securely
    fastened at intervals not exceeding __ mm. In addition, ENT shall be securely
    fastened in place within __ mm of each outlet box, device box, junction box,
    cabinet, or fitting where it terminates
    • 900
    • 900
  18. ENT shall be clearly
    and durably marked at least every __ mm as required in the first sentence of
    1.10.1.21
    3 000
  19. _____ Sheet metal
    enclosures with hinged or removable covers for housing and protecting electric
    wires, cable, and busbars in which conductors are laid in place after the
    wireway has been installed as a complete system
    Metallic Auxiliary Gutters
  20. _____ Flame
    retardant, non-metallic enclosures with removable covers for housing and
    protecting electric wires, cable, and busbars in which conductors are laid in
    place after the wireway has been installed as a complete system
    Nonmetallic Auxiliary Gutters
  21. Auxiliary gutters shall
    not be used under the following conditions: (1) To enclose switches,
    overcurrent devices, appliances, or other similar equipment.  (2) To extend a greater distance than __
    mm beyond the equipment that it supplements
    9 000
  22. The sum of the
    cross-sectional areas of all contained conductors at any cross section of a
    sheet metal auxiliary gutter shall not exceed __ percent of the interior cross sectional
    area of the sheet metal auxiliary gutter. The derating factors in
    3.10.1.15(b)(2)(a) shall be applied only where the number of current-carrying
    conductors, including neutral conductors classified as current-carrying under
    the provisions of 3.10.1.15(b)(4), exceeds 30
    20
  23. The sum of
    cross-sectional areas of all contained conductors at any cross section of the
    nonmetallic auxiliary gutter shall not exceed __ percent of the interior
    cross-sectional area of the nonmetallic auxiliary gutter
    20
  24. The current carried
    continuously in bare copper bars in sheet metal auxiliary gutters shall not
    exceed __ amperes/mm2 of cross section of the conductor. For aluminum bars,
    the current carried continuously shall not exceed __ amperes/mm2 of cross
    section of the conductor
    • 1.55
    • 1.09
  25. Sheet metal auxiliary
    gutters shall be supported throughout their entire length at intervals not
    exceeding __ mm
    1 500
  26. Nonmetallic auxiliary
    gutters shall be supported at intervals not to exceed __ mm and at each end or
    joint, unless listed for other support intervals. In no case shall the distance
    between supports exceed __ mm
    • 900
    • 3 000
  27. Expansion fittings
    shall be installed where expected length change, due to expansion and
    contraction due to temperature change, is more than __ mm
    6
  28. Splices or taps shall
    be permitted within gutters where they are accessible by means of removable
    covers or doors. The conductors, including splices and taps, shall not fill the
    gutter to more than __ percent of its area
    75
  29. Gutters shall be of
    substantial construction and shall provide a complete enclosure for the
    contained conductors. All surfaces, both interior and exterior, shall be
    suitably protected from corrosion. Corner joints shall be made tight, and where
    the assembly is held together by rivets, bolts, or screws, such fasteners shall
    be spaced not more than __ mm apart
    300
  30. (Auxiliary Gutters)
    Bare conductors shall be securely and rigidly supported so that the minimum
    clearance between bare current-carrying metal parts of different potential
    mounted on the same surface will not be less than __ mm, nor less than __ mm
    for parts that are held free in the air. A clearance not less than __ mm shall
    be secured between bare current-carrying metal parts and any metal surface
    • 50
    • 25
    • 25
  31. _____ is a grounded
    metal enclosure containing factory-mounted, bare or insulated conductors, which
    are usually copper or aluminum bars, rods, or tubes
    Busway
  32. Busways shall be
    permitted to be extended vertically through dry floors if totally enclosed
    (unventilated) where passing through and for a minimum distance of __ mm
    above the floor to provide adequate protection from physical damage
    1 800
  33. In other than
    industrial establishments, where a vertical riser penetrates two or more dry
    floors, a minimum __ mm high curb shall be installed around all floor openings
    for riser busways to prevent liquids from entering the opening. The curb shall
    be installed within __ mm of the floor opening
    • 100
    • 300
  34. Busways shall not be
    installed in hoistways , hazardous (classified) location, wet or damp locations
    unless identified for such use. Lighting busway and trolley busway shall not be
    installed less than __ mm above the floor or working platform unless
    provided with a cover identified for the purpose
    2 400
  35. Busways shall be
    securely supported at intervals not exceeding __ mm unless otherwise
    designed and marked
    1 500
  36. ____ is an assembly
    of insulated conductors with fittings and conductor terminations in a
    completely enclosed, ventilated protective metal housing
    Cablebus
  37. The current-carrying
    conductors in cablebus shall have an insulation rating of __°C (__°F) or higher
    and be an approved type suitable for the application
    75°C (167°F)
  38. The size and number
    of conductors shall be that for which the cablebus is designed, and in no case
    smaller than __ mm2
    50
  39. The individual
    conductors in a cablebus shall be supported at intervals not greater than __
    mm for horizontal runs and __ mm for vertical runs. Vertical and horizontal
    spacing between supported conductors shall not be less than one conductor
    diameter at the points of support
    • 900
    • 450
  40. Cablebus shall be
    securely supported at intervals not exceeding __ mm
    3 600
  41. Except where
    firestops are required, cablebus shall be permitted to extend vertically
    through floors and platforms in wet locations where (1) there are curbs or
    other suitable means to prevent waterflow through the floor or platform opening,
    and (2) where the cablebus is totally enclosed at the point where it passes
    through the floor or platform and for a distance of __ mm above the floor or
    platform
    1 800
  42. ____ is a single,
    enclosed tubular space in a floor made of precast cellular concrete slabs, the
    direction of the cell being parallel to the direction of the floor member
    Cell
  43. ____transverse metal
    raceways for electric conductors, providing access to predetermined cells of a
    precast cellular concrete floor, thereby permitting the installation of
    electric conductors from a distribution center to the floor cells
    Header
  44. (Cellular Concrete Floor Raceways)

    No conductor larger than __ mm2 shall be installed, except by special permission.
    The combined cross sectional area of all conductors or cables shall not exceed
    __ percent of the cross-sectional area of the cell or header
    • 50
    • 40
  45. _____ are the hollow
    spaces of cellular metal floors, together with suitable fittings, that may be approved
    as enclosures for electric conductors
    Cellular Metal Floor Raceway
  46. (CMFR)

    No conductor
    larger than __ mm2 shall be installed, except by special permission. The
    combined cross-sectional area of all conductors or cables shall not exceed __
    percent of the interior cross-sectional area of the cell or header. Junction
    boxes shall be leveled to the floor grade and sealed against the free entrance
    of water or concrete
    • 50
    • 40
  47. _____ are sheet metal
    troughs with hinged or removable covers for housing and protecting electric
    wires and cable and in which conductors are laid in place after the wireway has
    been installed as a complete system
    Metal Wireways

What would you like to do?

Home > Flashcards > Print Preview