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Electrical Drawings

Learning Objectives

  • Explain the purpose of an electrical drawing
  • Describe the title block, revision block, reference block, and legend block
  • Identify symbols commonly used in electrical drawings
  • Explain why device numbers are used in electrical drawings
  • Describe the purpose of each of the following:
    • Block drawing
    • One-line diagram
    • Wiring diagram
    • Schematic diagram
    • Connection diagram
    • Interconnection diagram
    • Raceway diagram
    • Cable schedule
    • Logic diagram

Available in English

60 Minutes

When you complete this lesson, you will be able to identify the different types of electrical drawings and describe how each is used. You will also be able to identify and describe the common elements and symbols that make up electrical drawings. Describe the purpose of an electrical drawing