NCCER Electrical L2 M10 MIX

1.0x

NCCER Electrical L2 M10 MIX

Created 3 years ago

Duration 0:00:00
lesson view count 193
Select the file type you wish to download
Slide Content
  1. Objectives

    Slide 2 - Objectives

    • When trainees have completed this session, they should be able to do the following:
    • 1. Explain the basic layout of a set of construction drawings.
    • 2. Describe the information included in the title block of a construction drawing.
    • 3. Identify the types of lines used on construction drawings.
    • 4. Using an architect’s scale, state the actual dimensions of a given drawing component.
    • 5. Interpret electrical drawings, including site plans, floor plans, and detail drawings.
    • 6. Interpret equipment schedules found on electrical drawings.
    • 7. Describe the type of information included in electrical specifications.
    • Basic Electrical Construction Drawings 26110-14
  2. Performance Tasks

    Slide 3 - Performance Tasks

    • 1. Using an architect’s scale, state the actual dimensions of a given drawing component.
    • 2. Make a material takeoff of the lighting fixtures specified in Performance Profile Sheet 2 using the drawing provided on Performance Profile Sheet 3. The takeoff requires that all lighting fixtures be counted, and where applicable, the total number of lamps for each fixture type must be calculated.
    • Basic Electrical Construction Drawings 26110-14
  3. 1.0.0 – 1.1.0

    Slide 4 - 1.0.0 – 1.1.0

    • Basic Electrical Construction Drawings 26110-14
    • Introduction to Construction Drawings
    • Working drawings include site plans, floor plans, detail drawings, and elevations. A site plan shows the location of the building on the property.
  4. 1.2.0

    Slide 5 - 1.2.0

    • Basic Electrical Construction Drawings 26110-14
    • Floor Plans
  5. 1.2.0

    Slide 6 - 1.2.0

    • Basic Electrical Construction Drawings 26110-14
    • Floor Plans of a Building
  6. 1.3.0

    Slide 7 - 1.3.0

    • Basic Electrical Construction Drawings 26110-14
    • Elevations
  7. 1.3.0

    Slide 8 - 1.3.0

    • Basic Electrical Construction Drawings 26110-14
    • Left and Right Elevations
  8. 1.4.0 – 1.5.0

    Slide 9 - 1.4.0 – 1.5.0

    • Basic Electrical Construction Drawings 26110-14
    • Sections; Electrical Drawings
  9. 2.0.0

    Slide 10 - 2.0.0

    • Basic Electrical Construction Drawings 26110-14
    • Drawing Layout
    • Drawing sets vary according to the preparer, but most sets include a title block. Some may also include a revision block and approval block.
  10. 2.1.0

    Slide 11 - 2.1.0

    • Basic Electrical Construction Drawings 26110-14
    • Title Block
    • • The title block is usually found in the lower right corner of the sheet. It includes identifying information such as the project name and location, owner, architectural firm, and job number.
    • • The title block also contains the scale of the drawing and sheet number.
  11. 2.1.0

    Slide 12 - 2.1.0

    • Basic Electrical Construction Drawings 26110-14
    • Title Blocks
  12. 2.2.0

    Slide 13 - 2.2.0

    • Basic Electrical Construction Drawings 26110-14
    • Approval Block
    • The approval block may contain an official stamp along with the initials of the drafter, design supervisor, owner, and architect.
  13. 2.2.0

    Slide 14 - 2.2.0

    • Basic Electrical Construction Drawings 26110-14
    • Alternate Approval Block
  14. 2.3.0

    Slide 15 - 2.3.0

    • Basic Electrical Construction Drawings 26110-14
    • Revision Block
    • When a drawing must be revised during construction, all revisions must be noted on the working drawings.
  15. 2.3.0

    Slide 16 - 2.3.0

    • Basic Electrical Construction Drawings 26110-14
    • Alternate Method of Showing Revisions on Working Drawings
  16. 3.0.0

    Slide 17 - 3.0.0

    • Basic Electrical Construction Drawings 26110-14
    • Drafting Lines
    • • Each line on a drawing has a specific meaning.
    • • Lines may vary from drawing to drawing. Always consult the legend or symbol list.
  17. 3.1.0

    Slide 18 - 3.1.0

    • Basic Electrical Construction Drawings 26110-14
    • Electrical Drafting Lines
    • • Electrical circuits and their components are also shown using lines.
    • • Each drawing should include a symbol list or legend to identify the types of lines.
  18. 4.0.0

    Slide 19 - 4.0.0

    • Basic Electrical Construction Drawings 26110-14
    • Electrical Symbols
  19. 4.0.0

    Slide 20 - 4.0.0

    • Basic Electrical Construction Drawings 26110-14
    • Various Receptacle Symbols Used on Electrical Drawings
    • • Receptacles are shown using the basic form of a circle, with one or more lines crossing it to indicate whether it is a single, duplex, or triplex type.
    • • Split-wired receptacles are shown with the upper half of the circle filled in.
    • • Range receptacles are marked with the letter R.
  20. 4.0.0

    Slide 21 - 4.0.0

    • Basic Electrical Construction Drawings 26110-14
    • General Types of Symbols Used on Electrical Drawings
    • Some electrical symbols are simply shapes, while others include abbreviations within or near the shape to indicate additional information, such as a specific type of fixture or device.
  21. 4.0.0

    Slide 22 - 4.0.0

    • Basic Electrical Construction Drawings 26110-14
    • Electrical Symbols Used by One Consulting Engineering Firm
    • While symbols are slowly being standardized, each architectural or engineering firm may develop its own set of symbols.
  22. 4.0.0

    Slide 23 - 4.0.0

    • Basic Electrical Construction Drawings 26110-14
    • Recommended Electrical Symbols
  23. 4.0.0

    Slide 24 - 4.0.0

    • Basic Electrical Construction Drawings 26110-14
    • Recommended Electrical Symbols (Cont.)
  24. 4.0.0

    Slide 25 - 4.0.0

    • Basic Electrical Construction Drawings 26110-14
    • Recommended Electrical Symbols (Cont.)
  25. 4.0.0

    Slide 26 - 4.0.0

    • Basic Electrical Construction Drawings 26110-14
    • Recommended Electrical Symbols (Cont.)
  26. 4.0.0

    Slide 27 - 4.0.0

    • Basic Electrical Construction Drawings 26110-14
    • Recommended Electrical Symbols (Cont.)
  27. 4.0.0

    Slide 28 - 4.0.0

    • Basic Electrical Construction Drawings 26110-14
    • Recommended Electrical Symbols (Cont.)
  28. 4.0.0

    Slide 29 - 4.0.0

    • Basic Electrical Construction Drawings 26110-14
    • Recommended Electrical Symbols (Cont.)
  29. 5.0.0

    Slide 30 - 5.0.0

    • Basic Electrical Construction Drawings 26110-14
    • Scale Drawings
    • • To use a scale drawing, note the dimension on the drawing and then convert it to the value of the scale.
    • • For example, if a drawing shows a scale of ½" = 1'-0", this means that every inch on the drawing represents two feet, so a drawing distance of 3" represents an actual dimension of 6'.
  30. 5.1.0

    Slide 31 - 5.1.0

    • Basic Electrical Construction Drawings 26110-14
    • Architect’s Scale
    • An architect’s scale is a special ruler that is marked with various scales to simplify drawing dimensions.
  31. 5.1.0

    Slide 32 - 5.1.0

    • Basic Electrical Construction Drawings 26110-14
    • One-Inch Architect’s Scale
    • A one-inch architect’s scale has a scale of 1" = 1'.
  32. 5.1.1

    Slide 33 - 5.1.1

    • Basic Electrical Construction Drawings 26110-14
    • Types of Architect’s Scales
    • • Both flat and triangular architect’s scales are available.
    • • Triangular architect’s scales are marked with 12 different scales, one on each edge.
  33. 5.1.1

    Slide 34 - 5.1.1

    • Basic Electrical Construction Drawings 26110-14
    • Various Scales on a Triangular Architect’s Scale
  34. 5.1.1

    Slide 35 - 5.1.1

    • Basic Electrical Construction Drawings 26110-14
    • Using the 1⁄8" Architect’s Scale to Determine the Dimensions on a Drawing
    • Using the 1⁄8" scale, the dimension shown here is 25'-6".
  35. 5.2.0

    Slide 36 - 5.2.0

    • Basic Electrical Construction Drawings 26110-14
    • Engineer’s Scale
    • Engineer’s scales are similar to architect’s scales except that dimensions are expressed in decimal units.
  36. 5.3.0

    Slide 37 - 5.3.0

    • Basic Electrical Construction Drawings 26110-14
    • Metric Scale
    • Drawings prepared for US government or international use require a metric scale.
    • Performance Task
    • Have the trainees use an architect’s scale to determine the actual dimensions of a given drawing component.
    • Next Session…
    • Analyzing Electrical Drawings
  37. 6.0.0 – 6.1.0

    Slide 38 - 6.0.0 – 6.1.0

    • Basic Electrical Construction Drawings 26110-14
    • Analyzing Electrical Drawings
  38. 7.0.0

    Slide 39 - 7.0.0

    • Basic Electrical Construction Drawings 26110-14
    • Power Plans
  39. 7.1.0

    Slide 40 - 7.1.0

    • Basic Electrical Construction Drawings 26110-14
    • Key Plan
    • • A key plan identifies the part of a project to which the sheet applies.
    • • Key plans are not drawn to scale and only indicate the general shape of the applicable building or section.
  40. 7.2.0

    Slide 41 - 7.2.0

    • Basic Electrical Construction Drawings 26110-14
    • Symbol List
    • Most symbol lists include only those symbols applicable to the particular project.
  41. 7.3.0 – 7.3.1

    Slide 42 - 7.3.0 – 7.3.1

    • Basic Electrical Construction Drawings 26110-14
    • Floor Plan
  42. 7.3.2

    Slide 43 - 7.3.2

    • Basic Electrical Construction Drawings 26110-14
    • Busways
  43. 7.4.0

    Slide 44 - 7.4.0

    • Basic Electrical Construction Drawings 26110-14
    • Branch Circuit Layout for Power
    • • An outlet is any point at which electrical equipment is connected to the wiring system.
    • • This may include direct-wired equipment such as lighting and other equipment, as well as power outlets, such as receptacles.
  44. 7.4.1

    Slide 45 - 7.4.1

    • Basic Electrical Construction Drawings 26110-14
    • Branch Circuit Drawings
    • • Branch circuits are shown on electrical drawings as a single line drawn from a panelboard to an outlet.
    • • If the drawing does not show the panelboard, a homerun symbol is used.
  45. 7.4.2

    Slide 46 - 7.4.2

    • Basic Electrical Construction Drawings 26110-14
    • Locating Receptacles
  46. 8.0.0

    Slide 47 - 8.0.0

    • Basic Electrical Construction Drawings 26110-14
    • Lighting Floor Plan
  47. 8.1.0

    Slide 48 - 8.1.0

    • Basic Electrical Construction Drawings 26110-14
    • Drawing Schedules
    • • Schedules provide a list of various types of equipment required by the drawing.
    • • A lighting schedule identifies each fixture (luminaire) by manufacturer and catalog number. It also explains how the fixture is mounted, provides the drawing symbol, and indicates the number of lamps required.
  48. 8.2.0

    Slide 49 - 8.2.0

    • Basic Electrical Construction Drawings 26110-14
    • Branch Circuit Layout for Lighting
  49. 8.2.0

    Slide 50 - 8.2.0

    • Basic Electrical Construction Drawings 26110-14
    • Electrical Symbols List
    • Performance Task
    • Have the trainees prepare a materials takeoff.
  50. 9.0.0 – 9.1.0

    Slide 51 - 9.0.0 – 9.1.0

    • Basic Electrical Construction Drawings 26110-14
    • Electrical Details and Diagrams
  51. 9.0.0 – 9.1.0

    Slide 52 - 9.0.0 – 9.1.0

    • Basic Electrical Construction Drawings 26110-14
    • Typical Panelboard Schedule
    • • A panelboard schedule lists the components contained in the panelboard.
    • • The panelboard schedule also indicates how the panelboard is to be mounted, the size of the panel in amps, its voltage rating, and whether it is single-phase or three-phase power.
    • • Branches indicate the type of overcurrent protection and the circuits fed by each device.
  52. 9.2.0 – 9.3.0

    Slide 53 - 9.2.0 – 9.3.0

    • Basic Electrical Construction Drawings 26110-14
    • Schematic Diagrams
    • Schematic diagrams show the actual connections between devices and are normally only provided for complex electrical systems.
  53. 9.2.0 – 9.3.0

    Slide 54 - 9.2.0 – 9.3.0

    • Basic Electrical Construction Drawings 26110-14
    • Circuit Being Controlled by Two Sets of Start/Stop Buttons
    • When adding pushbutton stations, the stop buttons are always connected in series and the start buttons in parallel.
    • Next Session…
    • Written Specifications
  54. 10.0.0 – 10.2.0

    Slide 55 - 10.0.0 – 10.2.0

    • Basic Electrical Construction Drawings 26110-14
    • Written Specifications
  55. 10.0.0 – 10.2.0

    Slide 56 - 10.0.0 – 10.2.0

    • Basic Electrical Construction Drawings 26110-14
    • Detailed Breakdown of the Electrical Division
  56. 10.0.0 – 10.2.0

    Slide 57 - 10.0.0 – 10.2.0

    • Basic Electrical Construction Drawings 26110-14
    • Detailed Breakdown of the Electrical Division (Cont.)
  57. 10.0.0 – 10.2.0

    Slide 58 - 10.0.0 – 10.2.0

    • Basic Electrical Construction Drawings 26110-14
    • Detailed Breakdown of the Electrical Division (Cont.)
  58. 10.0.0 – 10.2.0

    Slide 59 - 10.0.0 – 10.2.0

    • Basic Electrical Construction Drawings 26110-14
    • Detailed Breakdown of the Electrical Division (Cont.)
  59. 10.0.0 – 10.2.0

    Slide 60 - 10.0.0 – 10.2.0

    • Basic Electrical Construction Drawings 26110-14
    • Detailed Breakdown of the Electrical Division (Cont.)
  60. 10.0.0 – 10.2.0

    Slide 61 - 10.0.0 – 10.2.0

    • Basic Electrical Construction Drawings 26110-14
    • Detailed Breakdown of the Electrical Division (Cont.)
  61. 10.0.0 – 10.2.0

    Slide 62 - 10.0.0 – 10.2.0

    • Basic Electrical Construction Drawings 26110-14
    • Detailed Breakdown of the Electrical Division (Cont.)
  62. 10.0.0 – 10.2.0

    Slide 63 - 10.0.0 – 10.2.0

    • Basic Electrical Construction Drawings 26110-14
    • Detailed Breakdown of the Electrical Division (Cont.)
  63. 10.0.0 – 10.2.0

    Slide 64 - 10.0.0 – 10.2.0

    • Basic Electrical Construction Drawings 26110-14
    • Detailed Breakdown of the Electrical Division (Cont.)
  64. 10.0.0 – 10.2.0

    Slide 65 - 10.0.0 – 10.2.0

    • Basic Electrical Construction Drawings 26110-14
    • Detailed Breakdown of the Electrical Division (Cont.)
  65. 10.0.0 – 10.2.0

    Slide 66 - 10.0.0 – 10.2.0

    • Basic Electrical Construction Drawings 26110-14
    • Detailed Breakdown of the Electrical Division (Cont.)
  66. 10.0.0 – 10.2.0

    Slide 67 - 10.0.0 – 10.2.0

    • Basic Electrical Construction Drawings 26110-14
    • Detailed Breakdown of the Electrical Division (Cont.)
  67. 10.0.0 – 10.2.0

    Slide 68 - 10.0.0 – 10.2.0

    • Basic Electrical Construction Drawings 26110-14
    • Detailed Breakdown of the Electrical Division (Cont.)
  68. Wrap Up

    Slide 69 - Wrap Up

    • 3-2-1
    • 3 – Write 3 important things learned during class
    • 2 – Write 2 questions you have about the material
    • 1 – Write 1 thought you had about the material
    • Basic Electrical Construction Drawings 26110-14
  69. Next Session…

    Slide 70 - Next Session…

    • MODULE EXAM
    • Review the complete module to prepare for the module exam. Complete the Module Review as a study aid.
    • Basic Electrical Construction Drawings 26110-14