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DEI11M3-SP Fundamentals of Electrical Drawings and Diagrams

  • Duration:
  • Investment: US$ 129.00

Must complete all lessons




In the field of equipment maintenance, installation or modification, the ability to read and understand schematics and drawings is an absolute must. Any electrical working or drawing consists of lines, symbols, dimensions, and notations to accurately convey engineering’s design to the workers, who install the electrical system on the job. To be effective, technical staff should be able to read and understand electrical drawings and schematics for equipment maintenance, installation, or modification.
This course is designed to help students to understand the fundamentals of electrical drawings including logic diagrams, wiring lay out and CAD.
After completing this course, students will possess a professional knowledge on different types of drawings and diagrams and understand their purpose and flow.



  • HVAC Technicians
  • Machine Operators
  • Apprentices
  • Alarm Technicians
  • Electricians
  • Facility Managers
  • Non-Electrical Engineers
  • Building Engineers
  • Stationary Engineers
  • Multi-craft/Cross Training Personnel
  • Instrumentation engineers
  • Mechanical engineers




  • Drawings – relevance to engineering
  • Drawings in plant engineering
  • Manufacturing organization
  • Standards & their necessity
  • CAD & drawing standards
  • Typical engineering drawing & its parts



  • Different types of drawing
  • Sectional drawing & Block diagram
  • Electrical layout drawing & types
  • Area classification drawing
  • Wiring diagram, Drawing scales, block
  • Symbology for various types of drawings
  • Symbols as per electro-technology standards
  • Use of non-standard symbols



  • Single line diagram – advantages & example
  • 3 line diagram – applications  
  • Terms associated with single line diagram
  • Purpose of schematic diagram
  • Power & control circuit diagrams
  • Commonly used symbols
  • Applications of schematic diagrams
  • Cross reference between coils and contacts
  • Practical exercise
  • Logic diagrams & solid state logic circuits
  • Logic gates – AND, OR, NOT, NAND, NOR and Exclusive OR



  • Different types of cabling drawings
  • Wiring diagrams
  • Different types of wiring drawings
  • Difference between cabling & wiring drawings
  • Cable schedule
  • Example of cable schedule
  • Example of conduit schedule
  • Example of cable tray schedule
  • Example of cable routing schedule
  • Cable system drawings
  • Example for cable layout
  • Cable tray installation
  • Example of control cable interconnection
  • Conventions used
  • Practical exercise – wiring drawing
  • Conventions used for layout drawings



  • Introduction to CAD
  • Capabilities of CAD – editing, accuracy, storage & product design
  • Use of symbol & symbol libraries
  • Symbol attributes
  • Automated bill of material generation
  • Layers and their use in sharing information
  • Drawing management system
  • Planning & assigning of drawings
  • Drawing process flow and its steps
  • Revision control and ownership of drawing
  • Oil & gas application
  • Hazardous area zones in layouts


Plan Name Investment
Unlimited Access for 2 Years: US$ 129.00


Geoff Bottrill


Senior Hazardous Areas Engineer

Used: HZ Nov 12

Geoff has been working in the instrumentation, measurement and control fields for over twenty-five years and has spent the past fifteen years specialising in Hazardous Areas, Intrinsic Safety and Instrumentation Drawings. Geoff began his career at Kent Instruments, as a service engineer working in both the UK and East Africa. His experience ranges from systems design functions and on-site trouble shooting to technical and commercial customer support.

Recently Geoff has taken on the responsibility of mentoring engineers in training, in addition to the presentation of engineering workshops in the process control and measurement field. His positive interactive approach to teaching has made him popular with workshop attendees worldwide.


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