An intensive professional development training course on

Electrical Drawing

We currently have no scheduled sessions for this course. If you are interested in running this course, please contact our Training Department at

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Why Choose this Training Course?

Electrical equipment and devices are vital in all electrical installation so as to ensure continuity and efficient operations. The primary and basic tool for troubleshooting and maintenance of an electrical installation is to understand and interpret electrical drawings and ladder diagrams.

Electrical symbols, schematic and wiring diagrams facilitate the operations of the electrical installation equipment. This course will cover all these aspects with respect to electrical blueprint reading and tracing of circuits.

This course will familiarise engineers and technicians with the various standards and practices, and help to understand the power flow and equipment installed. Fitted diagrams and ladder diagrams will be presented to correlate with the electrical equipment installed. Tracing of electrical circuits with the relevant wiring diagrams will be demonstrated to ensure correct methods of troubleshooting.  

This course will highlight:

  • The interpretation and understanding of standard electrical symbols
  • The characteristics of single line diagrams
  • The importance of ladder diagrams
  • Using diagrams for circuit tracing
  • Troubleshooting electrical system using diagrams


What are the Goals?

At the end of this course, you will learn to:

  • Describe the various types of electrical drawings
  • Appreciate the importance of single line diagrams
  • Analyse the various electrical ladder drawings
  • Explain the operation of the electrical equipment using wiring and schematic diagrams
  • Recognise the symbols in electrical drawings


Who is this Training Course for?

The technicians and maintenance staff will be able to comprehend the construction, operations, function of major electrical equipment components. This will enable them to carry out effective maintenance activities.

This course is suitable to a wide range of professionals but will greatly benefit:

  • Electrical engineers
  • Electrical supervisors
  • Maintenance technicians
  • Managers in-charge of electrical installations
  • Project engineers


How will this Training Course be Presented?

Each course participant will receive a copy of the comprehensive seminar notes. The presenter will outline and discuss the topics using computer displays, videos and power point presentation. The seminar is designed to have an interactive format to maximize delegate participation. Questions and answers are encouraged throughout and at the daily sessions.


The Course Content

Day One: Introduction, Types of Drawings and Symbols
  • Importance and relevance of drawings
  • Categories of electrical drawing and their characteristics
  • Purposes served by different type of electrical drawings
  • International electrical symbols and drawings
  • Applications and functions of numerical relays
  • Importance of CTs and VTs information in electrical drawings
Day Two: Electrical Blueprint and Single Line Diagrams Interpretation
  • Single line diagram verses three line diagram
  • Protective devices coordination in single line diagrams
  • Wiring diagrams of motor starters
  • Interpreting and tracing single diagrams of an electrical installation
  • Fault current calculation based on information in the single line diagram
  • Trouble shooting an electrical installation with reference to the electrical blueprint
Day Three: Ladder Diagrams Interpretation
  • Types of ladder diagram
  • Generic electrical equipment ladder diagrams
  • Designing control circuits
  • Interlock control circuits
  • Protective relays and timers ladder diagrams
  • Fail safe designs
Day Four: Schematic and Control Diagrams and its Merits
  • VFD schematics and its operation related to control circuits
  • UPS power supply schematic diagram components functionalities
  • Reading and tracing AC input diagrams and its significance
  • Identify components in the rectifier, inverter and AC outputs schematic diagrams
  • Types of protection relays schematics, wiring, operation and functional diagrams
  • Motor installation and control circuits
Day Five: Logic Circuit Applications and Troubleshooting Strategies
  • Logic gates and characteristics
  • Digital logic functions
  • Programmable logic controllers
  • Process and instrument diagrams
  • Troubleshooting strategies
  • Q&A and wrap-up session

The Certificate

  • AZTech Certificate of Completion for delegates who attend and complete the course


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