(PEC-Chapter4) Sheet1-Part1

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Camskie
ID:
305600
Filename:
(PEC-Chapter4) Sheet1-Part1
Updated:
2015-08-15 12:30:01
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camille chapterfour
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PEC Chapter4 Part1
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  1. In industrial establishments where the
    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 installation, flexible cords and cables shall be permitted to be installed in aboveground raceways that
    are no longer than __ m to protect the flexible cord or cable from physical
    damage
    15
  2. Exception: The nominal
    insulation thickness for the ground-check conductors of Type G-GC cables
    shall
    not be less than __mm for 8.0 mm2 (3.2 mm dia.) and
    not less than __mm  for 5.5 mm2 (2.6 mm dia.)
    • 1.14
    • 0.76
  3. (Portable Cables Over 600 Volts, Nominal)

    The conductors shall be ___mm2 copper or larger and shall
    employ flexible stranding
    8.0 mm2 (3.2 mm dia.)
  4. Fixture (luminaire) wires shall not be smaller than ___ mm2
    0.75 mm2
  5. Thermoplastic
    insulated fixture wire shall be durably marked on the surface at intervals not
    exceeding ___ mm. All other fixture wire shall be marked by means of a printed
    tag attached to the coil, reel, or carton
    600
  6. What is the allowable ampacity of 1.25 mm2 fixture wires?
    8A
  7. Exception: Devices mounted so
    they are accessible only to licensed electrical practitioner or non licensed
    electrical practitioner under the supervision of a licensed electrical
    practitioner shall be permitted without barriers, provided they are located
    within an enclosure such that any energized parts within __ mm of the manual
    adjustment or switch are covered by suitable barriers
    150
  8. Exception: The blades and
    terminals supplying the load of a switch shall be permitted to be energized
    when the switch is in the openposition where the switch is connected to
    circuits or equipment inherently capable of providing a backfeed source of
    power. For such installations, a permanent sign shall be installed on the
    switch enclosure or immediately adjacent to open switches with the following
    words or equivalent:
    WARNING - LOAD SIDE TERMINALS MAY BE ENERGIZED BY BACKFEED
  9. All switches and
    circuit breakers used as switches shall be located so that they may be operated
    from a readily accessible place. They shall be installed such that the center
    of the grip of the operating handle of the switch or circuit breaker, when in
    its highest position, is not more than __ mm above the floor or working
    platform
    1 980
  10. A snap switch shall
    not be grouped or ganged in enclosures with other snap switches, receptacles,
    or similar devices, unless they are arranged so that the voltage between
    adjacent devices does not exceed __ volts, or unless they are installed in
    enclosures equipped with identified, securely installed barriers between
    adjacent devices
    300
  11. Metal faceplates shall be of
    ferrous metal not less than __ mm in thickness or of
    nonferrous metal not less than __ mm in thickness
    • 0.75
    • 1.00
  12. Faceplates of
    insulating material shall be noncombustible and not less than __ mm in
    thickness, but they shall be permitted to be less than __ mm in thickness if
    formed or reinforced to provide adequate mechanical strength
    • 0.25
    • 0.25
  13. Snap switches used
    with open wiring on insulators shall be mounted on insulating material that
    separates the conductors at least __ mm from the surface wired over
    13
  14. Knife switches rated
    at over __ amperes at 250 volts or less, and at over __ amperes at 251 to
    600 volts, shall be used only as isolating switches and shall not be opened
    under load
    • 1 200
    • 600
  15. (Knife switches)

    To interrupt currents over 1 200 amperes at __ volts, nominal, or less, or over
    600 amperes at __ to __ volts, nominal, a circuit breaker or a switch of
    special design listed for such purpose shall be used
    • 250
    • 251
    • 600
  16. (AC General-Use Snap Switch)

    A form of general-use snap switch suitable only for use on ac circuits for controlling the following:

    (1) Resistive and
    inductive loads, including electric-discharge lamps, not exceeding the ampere
    rating of the switch at the voltage involved

    (2) Tungsten-filament lamp loads
    not exceeding the ampere rating of the switch at __ volts

    (3) Motor loads not
    exceeding __ percent of the ampere rating of the switch at its rated voltage
    • 115
    • 80
  17. (AC/DC General-Use Snap Switch)

    A form of
    general-use snap switch suitable for use on either ac or dc circuits for
    controlling the following:

    (1) Resistive loads not exceeding the ampere rating
    of the switch at the voltage applied

    (2) Inductive loads not exceeding ___
    percent of the ampere rating.of the switch at the applied voltage. Switches
    rated in horsepower are suitable for controlling motor loads within their rating
    at the voltage applied.

    (3) Tungsten-filament lamp loads not exceeding the
    ampere rating of the switch at the applied voltage if __-rated
    • 50
    • T
  18. Snap switches rated __
    amperes or less directly connected to aluminum conductors shall be listed and
    marked CO/ALR
    20
  19. ( AC Specific-Use Snap Switches Rated for 347 Volts)

    Snap switches rated 347 volts ac shall be listed and shall be used only for controlling the loads permitted by (d)(1) and
    (d)(2).

    (1) Noninductive Loads. Noninductive loads other than tungstenfilament
    lamps not exceeding the ampere and voltage ratings of the switch.

    (2) Inductive
    Loads. Inductive loads not exceeding the ampere and voltage ratings of the
    switch. The ampere rating of the switch shall not be less than __ amperes at a
    voltage rating of 347 volts ac. Flush-type snap switches rated 347 volts ac
    shall not be readily interchangeable in box mounting with switches identified
    in 4.4.1.14(a) and 4.4.1.14(b)
    15
  20. Auxiliary contacts of
    a renewable or quick-break type or the equivalent shall be provided on all
    knife switches rated __ volts and designed for use in breaking current over
    __ amperes
    • 600
    • 200
  21. Receptacles and cord
    connectors shall be rated not less than __ amperes, __ volts, or __ amperes,
    __ volts, and shall be of a type not suitable for use as lampholders
    • 15
    • 125
    • 15
    • 250
  22. Receptacles rated 20
    amperes or less and designed for the direct connection of aluminum conductors
    shall be marked ___
    CO/ALR
  23. Receptacles incorporating an isolated grounding connection intended for the reduction of
    electrical noise (electromagnetic interference) as permitted in 2.50.7.17(d)
    shall be identified by an orange
    ___ located on the face of the receptacle
    triangle
  24. Receptacles installed
    on __- and __-ampere branch circuits shall be of the grounding type.
    Grounding-type receptacles shall be installed only on circuits of the voltage
    class and current for which they are rated, except as provided in Table
    2.10.2.3(b)(2) and Table 2.10.2.3(b)(3)
    • 15
    • 20
  25. (Replacement of Receptacles)

    (3) Non–grounding-Type Receptacles. Where
    grounding means does not exist in the receptacle enclosure,

    a. A non–grounding-type receptacle(s) shall be permitted to be replaced with
    another non–grounding type receptacle(s).
     
    b. A non–grounding-type receptacle(s) shall be permitted to be replaced
    with a ground-fault circuit interrupter-type of receptacle(s). These
    receptacles shall be marked “____________.” An equipment grounding
    conductor shall not be connected from the ground-fault circuit-interrupter-type
    receptacle to any outlet supplied from the ground-fault circuit-interrupter
    receptacle.

    c. A non–grounding-type receptacle(s) shall be permitted to be
    replaced with a grounding-type receptacle(s) where supplied through a
    ground-fault circuit interrupter. Grounding-type receptacles supplied through
    the ground-fault circuit interrupter shall be marked “____________” and “No
    Equipment Ground__________.” An equipment grounding conductor shall not be connected
    between the grounding-type receptacles
    • "No Equipment Ground"
    • "GFCI Protected"
    • "No Equipment Ground"
  26. After installation,
    receptacle faces shall be flush with or project from faceplates of insulating
    material and shall project a minimum of __ mm from metal faceplates
    0.38
  27. Receptacles, cord
    connectors, and attachment plugs shall be constructed such that receptacle or
    cord connectors do not accept an attachment plug with a different voltage or
    current rating from that for which the device is intended. However, a __-ampere
    __-slot receptacle or cord connector shall be permitted to accept a ___-ampere
    attachment plug of the same voltage rating. Non– grounding-type receptacles and
    connectors shall not accept groundingtype attachment plugs
    • 20
    • T
    • 15
  28. Where conduits or
    other raceways enter a switchboard, floor-standing panelboard, or similar
    enclosure at the bottom, sufficient space shall be provided to permit
    installation of conductors in the enclosure. The wiring space shall not be less
    than shown in Table 4.8.1.5 where the conduit or raceways enter or leave the
    enclosure below the busbars, their supports, or other obstructions. The conduit
    or raceways, including their end fittings, shall not rise more than __ mm above
    the bottom of the enclosure
    75
  29. What is the minimum
    spacing b/w insulated busbars, their supports, or other obstructions from the
    bottom of the enclosure?
    200mm
  30. For other than a
    totally enclosed switchboard, a space not less than __ mm shall be provided
    between the top of the switchboard and any combustible ceiling, unless a
    non-combustible shield is provided between the switchboard and the ceiling
    900
  31. Panelboards shall be classified for the purposes of this
    article as either lighting and appliance branchcircuitpanelboards or power
    panelboards, based on their content.
    A lighting and appliance branch circuit is a branch circuit that has a
    connection to the neutral of the panelboard and that has overcurrent protection
    of __ amperes or less in one or more conductors
    30
  32. A ___ and ___ branch-circuit panelboard is one having more than 10 percent of its overcurrent devices protecting lighting and appliance branch circuits.
    • lighting
    • appliance
  33. A lighting and
    appliance branch-circuit panelboard is one having more than __ percent of its
    overcurrent devices protecting lighting and appliance branch circuits.
    10
  34. A ____ panelboard is one having 10 percent or fewer of its overcurrent devices
    protecting lighting and appliance branch circuits
    power
  35. A power panelboard is one having __ percent or fewer of its overcurrent devices
    protecting lighting and appliance branch circuits
    10
  36. Not more than ___ overcurrent devices (other than those provided for in the mains) of a lighting and appliance branch-circuit panelboard shall be installed in any one cabinet or cutout box
    42
  37. How many 3-pole
    circuit breakers shall be installed in a panelboard?
    8 (eight)

    • 3-pole = 3 overcurrent devices
    • 2-pole = 2 overcurrent devices
  38. Each lighting and
    appliance branch-circuit panelboard shall be individually protected on the
    ___ side by not more than __ main circuit breakers or __ sets of fuses
    having a combined rating not greater than that of the panelboard
    • supply
    • two
    • two

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