PEC Chapter2 (Continuation again..)

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PEC Chapter2 (Continuation again..)
2015-08-15 11:50:06
camille chaptertwo

Chapter2 of PEC Continuation again.
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  1. COPPER. ___%
    conductivity when annealed.
  2. Coating of lead. Shall extend atleast ___mm below the top of the
  3. Bimetallic connections. Shall be installed at a point not less than
    ___mm above grade level
  4. Where
    downleads are concealed, connection shall be atleast ___mm above the lowest
  5. Air Terminals. Shall not extend not less than ____mm above the
    object protected for 6000mm maximum intervals and not less than ____mm above the object protected for 7600mm maximum intervals
    • 254
    • 600
  6. Air Terminals. Exceeding ___mm high shall not be supported
  7. Air Terminal Supports. Shall be at not less than _______ the height of the air terminal
  8. Flat or Gently Sloping Roofs. Which exceed ___m in width shall have additional
    air terminals at intervals not exceeding ___m on the flat or gently slope areas
    • 15
    • 15
  9. Gently Sloping Roofs are roofs having a span of ___m or less and a
    pitch of one eighth or less, or roofs having a span exceeding ___m and a pitch
    of one fourth or less
    • 12
    • 12
  10. Lower Roofs. Buildings which exceed ___m above grade are
    considered to protect lower roof portions
  11. Roofs with Intermediate Ridges. Roofs with a series of parallel ridges shall
    have air terminals along end ridges at terminals not exceeding ___mm
  12. An
    air terminal shall be placed within ___mm of the end of each intermediate ridge
  13. Irregular
    Roof Lines. The edge of the roof shall be considered continuous and air
    terminals shall be located within ___mm of the outermost projections of the
    roof edge.

    spacing : ___m(inner)
    • 600
    • 15
  14. Open Areas in Flat Roofs. Perimeter of open areas shall be protected if
    their perimeter exceeds ___m provided either rectangular dimension exceeds ___m
    • 92
    • 15
  15. Chimneys. ____mm thick.. when such chimneys or vents are
    not within a one-to-two zone of protection of an air terminal
  16. Chimney air terminals… ___mm from an air terminal
  17. Air Terminals. Max Spacing. ___mm or
    • 6000
    • 7600
  18. Gradual 
    Bends. No
    bend of a conductor shall form an included angle of less than ___ degrees nor
    shall have a radius of bend less than ___mm
    • 90
    • 203
  19. Supports. Conductors may be coursed through air without
    support for a distance of ___mm or less. With a ___mm rod or its equivalent
    support, securely fastened at each end, a conductor may be coursed through air
    for a distance not to exceed ___mm
    • 900
    • 16
    • 1800
  20. Roof Cross Runs. Conductors shall interconnect the air terminals
    on flat or gently sloping roofs that exceed ___m in width. Intervals not
    exceeding ___m
    • 15
    • 46
  21. One-Way Drops. Conductor drops from a higher to a lower roof
    level are permitted without an extra downlead provided the lower roof conductor
    run does not exceed ___m
  22. Dead Ends. Main conductor is not more
    than ____mm in total length
  23. Down Conductors. Structures over ___m in perimeter shall have an
    additional down conductor for each additional ___m of perimeter or fraction
    • 76
    • 30
  24. Number of Down Conductors. The average distance between down conductors
    shall not exceed ___m
  25. Protecting Down Conductors. The down conductor shall be protected for a
    minimum distance of ___mm above grade level
  26. Ground Terminals (Rods). Shall be not less than ____mm in diameter and
    ____mm long
    • 12.7
    • 2400
  27. Ground Rod Clamps. Clamps shall make contact with the ground rod
    for a distance of ___mm, measured parallel to the axis of ground rod. And with
    cable itself for a distance of at least ___mm
    • 38
    • 38
  28. _____
    shall be secured with at least two bolts or cap screws
  29. Variations Due to Soil Conditions. The nearest ground terminal shall be not less
    than ___mm from the fountain wall
  30. Deep Moist Clay Soil. The lightning conductor or ground terminal
    shall extend vertically not less than _____mm into the earth
  31. Sandy or Gravelly Soil. In sand or gravel, two or more ground
    terminals, at not less than ____mm spacings, shall be driven vertically to a
    minimum depth of _____mm below grade
    • 3000
    • 3000
  32. Shallow Top Soil. Trenches shall be not less than ____mm in
    length and from ___ to ___mm in depth in clay soil. In sandy or gravelly soil,
    the trench shall be not less than ___mm in length and ___mm in depth
    • 3700
    • 300
    • 600
    • 7300
    • 600
  33. Buried Copper Ground Plate. At least 0.80mm thick and having a minimum
    surface area of _____
  34. Soil Less than 300mm Deep. Structure shall be surrounded with a main-size
    conductor lain in a trench or in rock crevices. Accomplished by depositing
    approx. _____ of ____mm thick copper plate…
    • 0.84m2
    • 0.8
  35. Metal Bodies. All metal bodies of conductance having an area
    of _____ or a volume of _____ or greater shall be bonded to the lightning protection system
    • 0.26m2
    • 0.016m3
  36. Bonding Requirements for Metal Bodies of
    Bonding plate having a surface contact area or _______.
  37. Bonding Requirements for Metal Bodies of
    Connections to metal bodies of inductance are required if such bodies fall
    within ____mm of the main conductor or other bonded metal body
  38. FASTENERS > Anchors. Masonry anchors shall have a diameter of not
    less than 6.4mm and shall be set with care. Capable of withstanding a pull test
    of ____ Newtons
  39. Splicers and Clamps. Pull test of ____N.
  40. Concealment in Concrete. If roof conductors are similarly embedded,
    connections to reinforcing steel shall be made at intervals not exceeding ___m
  41. Grounding. If a ground is driven from the basement floor
    level, it shall be in contact with earth for a distance of ____mm
  42. Structural Steel Framing > Air Terminals. Shall be bonded to the steel framework at
    intervals of not more than ___m
  43. > Grounding. Ground connections shall be made at
    approximately every other steel column around the perimeter, and shall not
    average over ___m apart
  44. > Ground Terminals. Surface contact area of .not less than _____.
  45. Protection for Heavy-Duty Stacks > General. A smoke or vent stack is classified as
    heavy-duty if the cross-sectional area of the flue is greater than ______
    and the height is greater than ___m
    • 0.32m2
    • 23
  46. Materials > Corrosion Protection. Copper and bronze materials used on the upper
    ____mm of a stack shall have a continuous covering of lead having minimum
    thickness of ____mm to resist corrosion by flue gases
    • 7600
    • 1.6
  47. Air Terminals > They shall be uniformly distributed around the
    top of cylindrical stacks at intervals not exceeding ____mm. On square or
    rectangular stacks, air terminals shall be located not more than ____mm from the
    corners and shall be spaced not more than ____ mm apart around the perimeter
    • 2400
    • 600
    • 2400
  48. > Air terminal Heights. Height of air terminals above stacks shall be
    not less than ___mm nor more than ___mm. They shall be at least ___mm in
    • 460
    • 760
    • 15
  49. > Top-mounted Air Terminals. Shall not extend more than ___mm above the top
    of the stack
  50. Heavy-duty stacks> Conductors. Shall be copper weighing not less than ___ grams
    per meter without lead covering. The size of any wire in the conductor shall be
    not less than
    • 558
    • 1.5mm2
  51. > Down Conductors. Not less than ___ down conductors shall be
    provided. Conductors shall also be interconnected at intervals of ___m on all
    stacks exceeding 60m in height
    • 2
    • 30
  52. > Down Conductors. Shall be protected from physical damage or
    displacement for a distance of not less than ___mm above grade
  53. Fasteners > Vertical Conductors. Shall be fastened at intervals not exceeding
    ____mm and horizontal conductor at intervals not exceeding ____mm
    • 900
    • 600
  54. Splices > Pull test : ____N.. and Distance not less than ___mm,
    measured parallel to the axis of conductor
    • 890
    • 38
  55. Bonding > Bonding Plates. Surface contact area not less than _______.
  56. Grounding > If driven ground rods are used, they shall be
    the equivalent of a copper-clad rod having a diameter of ____mm and shall be at
    least _____mm in length
    • 16
    • 3000
  57. Sheet Steel. Sheet steel less than ___mm in thickness may be
    punctured by severe strokes and  shall
    not be relied upon us protection from direct lightning strokes
  58. The
    minimum clearance between the Overhead
    Ground Wires and the highest projection on the protected structure shall be
  59. For
    each 3000mm of lead between a point on the ground wire midway between the
    supporting masts and ground in excess of ___m, the clearance shall be increased
    by ___mm
    • 18
    • 300
  60. Floating Roof Tanks > Protection. Where floating-roofs utilize hangers located
    within a vapour space, the roof shall be electrically bonded to the shoes of
    the seal through the most direct electrical path at intervals not greater than
    ____mm on the circumference of the tank
  61. > These
    shunts shall consist of flexible Type
    ___, ____mm x ___mm wide stainless steel straps, or the equivalent in
    current-carrying capacity and corrosion resistance.
    • 302
    • 0.4
    • 51