Interpreting Electrical Schematics

Objectives

  • Differentiate between the different types of symbols
  • Explain the basic rules of reading schematics
  • Review examples of electrical schematics

Reading Schematics

Electrical and electronic systems are presented in schematic or diagramatic forms.

The major types of visual representation are:

  • Pictorial
  • Components
  • Block Diagrams
  • Schematic Diagrams
  • Wiring Diagrams

It is the job of a draftsperson to create the schematic so that it is "electrically" correct. It is of equal importance that the schematic is pleasing to the eye and easy to interpret.

A schematic or wiring diagram that illustrates how components are connected is essential to good troubleshooting.

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