(PEC-Chapter3) Sheet2-Part4

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Camskie
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305315
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(PEC-Chapter3) Sheet2-Part4
Updated:
2015-08-03 08:51:46
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PEC Chapter 3
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  1. The sum of the
    cross-sectional areas of all contained conductors at any cross section of a
    wireway shall not exceed __ percent of the interior cross-sectional area of the
    wireway
    20
  2. Wireways shall be
    supported where run horizontally at each end and at intervals not to exceed __ mm or for individual lengths longer than __ mm at each end or joint,
    unless listed for other support intervals. The distance between supports shall
    not exceed __ mm
    • 1500
    • 1500
    • 3 000
  3. Vertical runs of
    wireways shall be securely supported at intervals not exceeding __ mm and
    shall not have more than one joint between supports. Adjoining wireway sections
    shall be securely fastened together to provide a rigid joint
    4 500
  4. _____ are flame
    retardant, nonmetallic troughs with removable covers for housing and protecting
    electric wires and cables in which conductors are laid in place after the
    wireway has been installed as a complete system
    Nonmetallic Wireways
  5. The sum of
    cross-sectional areas of all contained conductors at any cross section of the
    nonmetallic wireway shall not exceed __ percent of the interior
    cross-sectional area of the nonmetallic wireway
    20
  6. Nonmetallic wireways
    shall be supported where run horizontally 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
  7. Vertical runs of
    nonmetallicwireway shall be securely supported at intervals not exceeding __
    mm, unless listed for other support intervals, and shall not have more than one
    joint between supports. Adjoining nonmetallicwireway sections shall be securely
    fastened together to provide a rigid joint
    1 200
  8. _____ is a type of
    surface, flush, or freestanding raceway designed to hold conductors and
    receptacles, assembled in the field or at the factory
    Multioutlet Assembly
  9. A multioutlet
    assembly shall not be installed as follows:

    (1) Where concealed, except that it
    shall be permissible to surround the back and sides of a metal multioutlet
    assembly by the building finish or recess a nonmetallicmultioutlet assembly in
    a baseboard

    (2) Where subject to severe physical damage

    (3) Where the voltage
    is __ volts or more between conductors unless the assembly is of metal having
    a thickness of not less than __ mm 

    (4)
    Where subject to corrosive vapors

    (5) In hoistways

    (6) In any hazardous
    (classified) locations except Class I, Division 2 locations as permitted in
    5.1.2.1(b)(3)
    • 300
    • 1.02
  10. _____ An assembly of
    two insulated conductors within a nonmetallic jacket or an extruded
    thermoplastic covering. The classification includes surface extensions intended
    for mounting directly on the surface of walls or ceilings
    Nonmetallic Extension
  11. Nonmetallic
    extensions shall be permitted only in accordance with 3.82.2.1(a), (b), and
    (c).

    (a)From an Existing Outlet. The extension shall be from an
    existing outlet on a __- or __-ampere branch circuit.

    (b) Exposed and in a Dry Location.
    The extension shall be run exposed and in a dry location.

    (c)Residential
    or Offices. For nonmetallic surface extensions mounted directly on
    the surface of walls or ceilings, the building shall be occupied for
    residential or office purposes and shall not exceed three floors above grade
    • 15
    • 20
  12. Nonmetallic
    extensions shall not be where the voltage between conductors exceeds __ volts
    for nonmetallic surface extension and __ volts for aerial cable
    • 150
    • 300
  13. One or more
    extensions shall be permitted to be run in any direction from an existing
    outlet, but not on the floor or within __ mm from the floor
    50
  14. Nonmetallic surface
    extensions shall be secured in place by approved means at intervals not
    exceeding __ mm, with an allowance for __ mm to the first fastening where the
    connection to the supplying outlet is by means of an attachment plug
    • 200
    • 300
  15. ____ is a metallic
    raceway that is intended to be mounted to
    the surface of or suspended from
    a structure, with associated accessories for the installation of electrical
    conductors and cables
    Strut-Type Channel Raceway
  16. The derating factors
    of 3.10.1.15(b)(2)a shall not apply to conductors installed in strut-type
    channel raceways where all of the following conditions are met:

    (1) The
    cross-sectional area of the raceway exceeds ___ mm2 

    (2) The current-carrying conductors do not
    exceed __ in number.

    (3) The sum of the cross-sectional areas of all contained
    conductors does not exceed __ percent of the interior cross-sectional area of
    the strut-type channel raceways, calculated in accordance with the following
    formula for wire fill
    • 2500 mm2
    • 30
    • 20
  17. A surface mount
    strut-type channel raceway shall be secured to the mounting surface with
    retention straps external to the channel at intervals not exceeding __ mm
    and within __ mm of each outlet box, cabinet, junction box, or other channel
    raceway termination. (same for Suspension
    Mount)
    • 3 000
    • 900
  18. ______ is a metallic
    raceway that is intended to be mounted to the surface of a structure, with
    associated couplings, connectors, boxes, and fittings for the installation of
    electrical conductors
    Surface Metal Raceway
  19. Surface metal
    raceways shall not be used in the following:

    (1) Where subject to severe
    physical damage, unless otherwise approved
    (2) Where the voltage is __ volts
    or more between conductors, unless the metal has a thickness of not less than
    __ mm nominal
    (3) Where subject to corrosive vapors
    (4) In hoistways
    (5) Where concealed, except as permitted in 3.86.2.1
    • 300
    • 1.0
  20. The derating factors
    of 3.10.1.15(b)(2)a shall not apply to conductors installed in surface metal
    raceways where all of the following conditions are met:

    (1) The cross-sectional
    area of the raceway exceeds __ mm2 

    (2)
    The current-carrying conductors do not exceed __ in number

    (3) The sum of the
    cross-sectional areas of all contained conductors does not exceed __ percent of
    the interior cross-sectional area of the surface metal raceway
    • 2500 mm2
    • 30
    • 20
  21. ______ is
    a nonmetallic raceway that is intended to be mounted to the surface of a
    structure, with associated couplings, connectors, boxes, and fittings for the
    installation of electrical conductors
    Surface Nonmetallic Raceway
  22. (Underfloor Raceways)

    Half-round and flat-top raceways not over __ mm in width shall have not less
    than __ mm of concrete or wood above the raceway.
    • 100
    • 19
  23. (Underfloor Raceways)

    Flat-top raceways over __ mm but not over __ mm wide with a minimum of __ mm spacing between raceways shall be covered with concrete to a depth of not less than __ mm.
    • 100
    • 200
    • 25
    • 25
    • 25
    • 40
  24. (Underfloor Raceways)
    Raceways over 100mm wide but not over 200mm wide.

    Raceways spaced less than __ mm apart shall be covered with concrete to a depth of __ mm
  25. (Underfloor Raceways)

    In office occupancies, approved metal flat-top raceways, if not over __ mm in
    width, shall be permitted to be laid flush with the concrete floor surface,
    provided they are covered with substantial linoleum that is not less than __
    mm thick or with equivalent floor covering.The combined cross-sectional area of
    all conductors or cables shall not exceed __ percent of the interior 
    cross-sectional area of the raceway
    • 100
    • 1.60
    • 40
  26. _____ is a unit or
    assembly of units or sections and associated fittings forming a structural
    system used to securely fasten or support cables and raceways
    Cable Tray System
  27. Single-conductor
    cable shall be __ mm2 or larger and shall be of a type listed and marked on the
    surface for use in cable trays.
    50 mm2
  28. Where __ mm2 through __ mm2 single-conductorcables are installed in ladder cable tray, the maximum allowable rung spacing for the ladder cable tray shall be __ mm. Single conductors used as equipmentgrounding conductors shall be insulated, covered, or bare, and they shall be __ mm2 or larger
    • 50 mm2
    • 100 mm2
    • 230
    • 22 mm2
  29. Where cable trays
    support individual conductors and where the conductors pass from one cable tray
    to another, or from a cable tray to raceway(s) or from a cable tray to
    equipment where the conductors are terminated, the distance between cable trays or between the cable tray and the raceway(s) or the equipment shall not exceed __ mm
    1 800
  30. Where any of the
    single conductors installed in ladder or ventilated trough cable trays are __ mm2 through __ mm2, all single conductors shall be installed in a single layer
    • 50 mm2
    • 100 mm2
  31. Number of multiconductor cables rated 2000v or less in cable trays


    Any Mixture of Cables.(Ladder or ventilated trough cabletrays)

    (1) Where all of the cables are __ mm2 or
    larger, the sum of the diameters of all cables shall not exceed the cable tray
    width, and the cables shall be installed in a single layer.

    (2) Where all of the
    cables are smaller than __ mm2, the sum of the cross-sectional areas of all
    cables shall not exceed the maximum allowable cable fill area in Column 1 of
    Table 3.92.1.9 for the appropriate cable tray width.

    (3) Where __ mm2 or larger
    cables are installed in the same cable tray with cables smaller than __ mm2,
    the sum of the cross-sectional areas of all cables smaller than __ mm2 shall not
    exceed the maximum allowable fill area resulting from the calculation in Column2
    of Table 3.92.1.9 for the appropriate cable tray width. The __ mm2 and larger
    cables shall be installed in a single layer, and no other cables shall be
    placed on them.
    • 100 mm2
    • 100 mm2
    • 100 mm2
    • 100 mm2
    • 100 mm2
    • 100 mm2
  32. Number of multiconductor cables rated 2000v or less in cable trays

    Multiconductor Control and/or Signal Cables Only.

    - Where a ladder or ventilated trough cable tray
    having a usable inside depth of __ mm or less contains multiconductor control
    and/or signal cables only, the sum of the cross-sectional areas of all cables
    at any cross section shall not exceed __ percent of the interior
    cross-sectional area of the cable tray.
    • 150
    • 50
  33. Number of multiconductor cables rated 2000v or less in cable trays

    Multiconductor Control and/or Signal Cables Only. 

    - A depth of __ mm shall be used to calculate the allowable interior cross-sectional area of any cable tray that has a usable inside depth of more than __ mm
    • 150
    • 150
  34. Number of multiconductor cables rated 2000v or less in cable trays

    Where a solid bottom cable tray having a
    usable inside depth of __ mm or less contains multiconductor control and/or signal cables only, the sum of the
    cross-sectional areas of all cables at any cross section shall not exceed __ percent
    of the interior cross-sectional area of the cable tray. A depth of __ mm shall
    be used to calculate the allowable interior cross-sectional area of any cable
    tray that has a usable inside depth of more than __ mm
    • 150
    • 40
    • 150
    • 150
  35. Number of  Single Conductor cables, rated 2000v or less in cable trays 

    Where __ mm, __ mm,
    __ mm, or __ mm wide ventilated channel cable trays contain single-conductor
    cables, the sum of the diameters of all single conductors shall not exceed the
    inside width of the channel
    • 50
    • 75
    • 100
    • 150
  36. _____is a wiring
    method using knobs, tubes, and flexible nonmetallic tubing for the protection
    and support of single insulated conductors
    Concealed-Knob-and-Tube Wiring
  37. Conductors shall
    comply with 3.98.2.8 where passing through holes in structural members. Where
    passing through wood cross members in plastered partitions, conductors shall be
    protected by noncombustible, nonabsorbent, insulating tubes extending not less
    than __ mm beyond the wood member
    75
  38. Concealed-Knob-and-Tube Wiring


    A clearance of not
    less than __ mm shall be maintained between conductors and a clearance of not
    less than __ mm between the conductor and the surface over which it passes
    • 75
    • 25
  39. Concealed-Knob-and-Tube Wiring


    Conductors shall be
    installed along the side of or through bored holes in floor joists, studs, or
    rafters. Where run through bored holes, conductors in the joists and in studs
    or rafters to a height of not less than __ mm above the floor or floor
    joists shall be protected by substantial running boards extending not less than
    __ mm on each side of the conductors
    • 2 100
    • 25
  40. Concealed-Knob-and-Tube Wiring

    Exception: In buildings completed before the wiring is installed, attic
    and roof spaces that are not accessible by stairway or permanent ladder and
    have headroom at all points less than __ mm, the wiring shall be permitted to
    be installed on the edges of rafters or joists facing the attic or roof space
    900
  41. Concealed-Knob-and-Tube Wiring

    Conductors shall be
    rigidly supported on noncombustible, nonabsorbent insulating materials and
    shall not contact any other objects. Supports shall be installed as follows:

    (1) Within __ mm of each side of each tap or splice, and

    (2) at intervals not exceeding __ mm
    • 150
    • 1 400
  42. _____ is an exposed
    wiring support system using a messenger wire to support insulated conductors by
    any one of the following:

    (1) A messenger with rings and saddles for conductor
    support
    (2) A messenger with a field-installed lashing material for conductor
    support
    (3) Factory-assembled aerial cable
    (4) Multiplex cables utilizing a
    bare conductor, factory assembled and twisted with one or more insulated
    conductors, such as duplex, triplex, or quadruplex type of construction
    Messenger Supported Wiring
  43. The messenger shall
    be supported at __ and at __ locations so as to eliminate
    tension on the conductors. The conductors shall not be permitted to come into
    contact with the messenger supports or any structural members, walls, or pipes
    • dead ends
    • intermediate
  44. _____ is an exposed
    wiring method using cleats, knobs, tubes, and flexible tubing for the
    protection and support of single insulated conductors run in or on buildings
    Open Wiring on Insulators
  45. Open Wiring on Insulators

    In dry locations,
    where not exposed to physical damage, conductors shall be permitted to be
    separately enclosed in flexible nonmetallic tubing. The tubing shall be in
    continuous lengths not exceeding __ mm and secured to the surface by straps
    at intervals not exceeding __ mm
    • 4 500
    • 1 400
  46. Open Wiring on Insulators

    Conductors within __ mm from the floor shall be considered exposed to physical damage.
    2 100
  47. Open Wiring on Insulators

    Open conductors shall
    be separated at least __ mm from
    metal raceways, piping, or other conducting material, and from any exposed
    lighting, power, or signaling conductor, or shall be separated therefrom by a
    continuous and firmly fixed non-conductor in addition to the insulation of the
    conductor
    50
  48. Conductors shall be
    installed along the side of or through bored holes in floor joists, studs, or
    rafters. Where run through bored holes, conductors in the joists and in studs
    or rafters to a height of not less than __ mm above the floor or floor joists
    shall be protected by substantial running boards extending not less than __ mm
    on each side of the conductors
    • 2 100
    • 25
  49. Open Wiring on Insulators

    Conductors smaller than __ mm2 shall
    be rigidly supported on noncombustible, nonabsorbent insulating materials and
    shall not contact any other objects. Supports shall be installed as follows:

    (1) Within __ mm from a tap or splice
    (2) Within __ mm of a dead-end
    connection to a lampholder or receptacle.
    (3) At intervals not exceeding __ mm and at closer intervals sufficient
    to provide adequate support where likely to be disturbed
    • 8.0 mm2 (3.2 mm dia.)
    • 150
    • 300
    • 1 400
  50. Supports for
    conductors __ mm2 or larger installed across open spaces shall be
    permitted up to __ mm apart if noncombustible, nonabsorbent insulating
    spacers are used at least every __ mm to maintain at least __ mm between
    conductors.
    • 8.0 mm2(3.2 mm dia.)
    • 4 500
    • 1 400
    • 65
  51. Where not likely to be disturbed in buildings of mill construction, __ mm2 and larger conductors shall be permitted to be run acrossopen spaces if supported from each wood cross member on approved insulators maintaining __ mm between conductors
    • 8.0 mm2(3.2 mm dia.)
    • 150
  52. In industrial
    establishments only, where conditions of maintenance and supervision ensure
    that only licensed electrical practitioner or non licensed electrical
    practitioner under the supervision of a licensed electrical practitioner
    service the system, conductors of sizes __ mm2 and larger shall be permitted
    to be run across open spaces where supported at intervals up to __ mm
    • 125
    • 9 000
  53. Where nails are used
    to mount knobs, they shall not be smaller than tenpenny. Where screws are used
    to mount knobs, or where nails or screws are used to mount cleats, they shall
    be of a length sufficient to penetrate the wood to a depth equal to at least
    __ the height of the knob and the full thickness of the cleat.
    one-half
  54. Cushion washers shall be used with __.
    nails
  55. __ mmor larger conductors supported on solid knobs shall be securely tied thereto by
    tie wires having an insulation equivalent to that of the conductor
    8.0 mm2(3.2 mm dia.)

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