(PEC Chapter4) Sheet2-Part2

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Author:
Camskie
ID:
306437
Filename:
(PEC Chapter4) Sheet2-Part2
Updated:
2015-08-17 05:52:27
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camille chapterfour
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Description:
Chapter4
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  1. The entire ceiling surface shall have a finish of thermally noninsulating sand plaster that has a nominal thickness of __ mm, or other noninsulating material identified as suitable for this use and applied according to specified thickness and directions
    13
  2. Cables shall be secured by means of approved stapling, tape, plaster, nonmetallic spreaders, or other approved means either at intervals not exceeding __ mm or at intervals not exceeding __ mm for cables identified for such use
    • 410
    • 1 800
  3. _______ or _______ that straddle the cable shall not be used with metal lath or other electrically conductive surfaces
    • Staples
    • metal fasteners
  4. In dry board installations, the entire ceiling below the heating cable shall be covered with gypsum board not exceeding __ mm thickness
    13
  5. In dry board applications, cable shall be installed parallel to the joist, leaving a clear space centered under the joist of __mm (width) between centers of adjacent runs of cable
    65
  6. Not less than __ mm of free nonheating lead shall be within the junction box. The marking of the leads shall be visible in the junction box
    150
  7. (Cables in Concrete or Poured Masonry Floors)

    Constant wattage heating cables shall not exceed __ watts/linear meter of cable. The spacing between adjacent runs of cable shall not be less than __ mm on centers
    • 54
    • 25
  8. Heat pumps and air conditioners having duct heaters closer than __ mm to the heat pump or air conditioner shall have both the duct heater and heat pump or air conditioner identified as suitable for such installation and so marked
    1 200
  9. A boiler employing resistance-type immersion heating elements contained in an ASME rated and stamped vessel shall have the heating elements protected at not more than __ amperes. Such a boiler rated more than __ amperes shall have the heating elements subdivided into loads not exceeding __ amperes
    • 150
    • 120
    • 120
  10. A boiler employing resistance-type heating elementsnot contained in an ASME rated and stamped vessel shall have the heating elements protected at not more than __ amperes. Such a boiler rated more than __ amperes shall have the heating elements subdivided into loads not exceeding __ amperes
    • 60
    • 48
    • 48
  11. (Electrode-Type Boilers)

    The size of branch-circuit conductors and overcurrent protective devices shall be calculated on the basis of __ percent of the total load (motors not included).
    125
  12. A contactor, relay, or other device, approved for continuous operation at __ percent of its rating, shall be permitted to supply its full-rated load
    100
  13. ____ is a complete assembly provided with a junction box or a length of flexible conduit for connection to a branch circuit.
    Heating Panel
  14. _______ is a rigid or nonrigid assembly provided with nonheating leads or a terminal junction assembly identified as being suitable for connection to a wiring system
    Heating Panel Set
  15. Edges of panels and panel sets shall be separated by not less than __ mm from the edges of any outlet boxes andjunction boxes that are to be used for mounting surface luminaires (lighting fixtures).
    200
  16. A clearance of not less than __ mm shall be provided from recessed luminaires (fixtures) and their trims, ventilating openings, and other such openings in room surfaces, unless the heating panels and panel sets are listed and marked for lesser clearances, in which case they shall be permitted to be installed at the marked clearances
    50
  17. Wiring located aboveheated ceilings shall be spaced not less than __ mm above the heated ceiling and shall be considered as operating at an ambient of __°C
    • 50
    • 50
  18. Any wiring behind heating panels or heating panel sets located in interior walls or partitions shall be considered as operating at an ambient temperature of __°C , and the ampacity shall be calculated on the basis of the correction factors given in the 0–2 000 volt ampacity tables of Article 3.10
    40
  19. (Installation in Concrete or Poured Masonry)

    Heating panels or heating panel sets shall not exceed __ watts/m2 of heated area
    355
  20. (Installation Under Floor Covering)

    Heating panels or panel sets installed under floor covering shall not exceed ___ watts/m2 of heated area
    160
  21. ______is a system in which heat is generated in a pipeline or vessel wall by causing current to flow through the pipeline or vessel wall by direct connection to an ac voltage source from a dual-winding transformer
    Impedance Heating System
  22. ______ is a system in which heat is generated in a pipeline or vessel wall by inducing current and hysteresis effect in the pipeline or vessel wall from an external isolated ac field source.
    Induction Heating System
  23. ______ is a complete system consisting of components such as pipelines, vessels, heating elements, heat transfer medium, thermal insulation, moisture barrier, nonheating leads, temperature controllers, safety signs, junction boxes, raceways, and fittings.
    Integrated Heating System
  24. ______ is a length of pipe including pumps, valves, flanges, control devices, strainers, and/or similar equipment for conveying fluids.
    Pipeline
  25. ______ is a specific separate element to generate heat that is applied to the pipeline or vessel externally or internally.
    Resistance Heating Element
  26. ______ is a system in which heat is generated on the inner surface of a ferromagnetic envelope attached to a pipeline or vessel, or both.
    Skin-Effect Heating System
  27. ______ is a container such as a barrel, drum, or tank for holding fluids or other material.
    Vessel
  28. Resistance Heating Elements)

    External surfaces of pipeline and vessel heating equipment that operate at temperatures exceeding __°C shall be physically guarded, isolated, or thermally insulated to protect against contact by personnel in the area
    60
  29. Power supply nonheating leads (cold leads) for resistance elements shall be suitable for the temperature encountered. Not less than __ mm of nonheating leads shall be provided within the junction box
    150
  30. Each factory-assembled heating unit shall be legibly marked within __ mm of each end of the nonheating leads with the permanent identification symbol, catalog number, and ratings in volts and watts or in volts and amperes
    75
  31. (Impedance Heating)

    Unless protected by ground-fault circuit-interrupter protection for personnel, the secondary windingof the isolation transformerconnected to the pipeline or vessel being heated shall not have an output voltage greater than __ volts ac.
    30
  32. Where ground-fault circuit-interrupter protection for personnel is provided, the voltage shall be permitted to be greater than __ but not more than __ volts
    • 30
    • 80
  33. Exception: In industrial establishments, the isolation transformer connected to the pipeline or vessel being heated shall be permitted to have an output voltagenot greater than __ volts ac to ground where all of the following conditions apply:

    (1) 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 installed systems.

    (2) Ground fault protection of equipment is provided.

    (3) The pipeline or vessel being heated is completely enclosed in a grounded metal enclosure.

    (4) The transformer secondary connections to the pipeline or vessel being heated are completely enclosed in a grounded metal mesh or metal enclosure
    132
  34. The pipeline, vessel, or both, that is being heated and operating at a voltage greater than __ but not more than __ shall be grounded at designated points.
    • 30
    • 80
  35. The ampacity of the conductors connected to the secondary of the transformer shall be at least __ percent of the total load of the heater
    100
  36. (Induction Heating)

    Induction coils that operate or may operate at a voltage greater than __ volts ac shall be enclosed in a nonmetallic or split metallic enclosure, isolated, or made inaccessible by location to protect personnel in the area
    30
  37. Induction coils that operate or may operate at a voltage greater than __ volts ac shall be enclosed in a nonmetallic or split metallic enclosure, isolated, or made inaccessible by location to protect personnel in the area
    30
  38. Control and Protection) The factory-installed attachment plug of cord-and-plug-connected equipment rated __ amperes or less and __` volts or less to ground shall be permitted to be the disconnecting means.
    • 20
    • 150

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