• ETT Level 2.5: System Analysis and Operation

    Learn how to read and interpret electrical drawings and one-line diagrams.

    1. Basic drawings and diagrams - Read and interpret electrical drawings and one-line diagrams.
      • System One-Line Diagram [PDF] A one-line diagram (single line) is "a diagram that shows, by means of single line and graphic symbols, the course of an electric circuit or system of circuits and the component devices or parts used therein."
      • Electrical One-Line Diagram Symbols One-line diagrams are an important means of communicating the components, relationships, and connections within a circuit or electrical system. The one-line diagram symbols presented here are commonly accepted symbols.
      • ANSI/IEEE Standard Device Numbers Device numbers are specified in ANSI/IEEE Standard C37.2 and are used to identify the functions of a device shown on a schematic diagram.

    External links are provided by our community of test technicians. Please submit any resources that you feel may be helpful to this topic.


    Recommended: Study tips for the NETA exam

    Share this page

    Comments

    2 total comments
    1. testguy's Avatar
      testguy
      Quote Originally Posted by j-stoner View Post
      When clicking on the ANSI/IEEE Device link, the page comes up as not found? Is there a different link to click on?
      Link has been fixed, thank you for reporting.
      Reply •

    1. j-stoner's Avatar
      j-stoner
      When clicking on the ANSI/IEEE Device link, the page comes up as not found? Is there a different link to click on?
      Reply •

    Leave a comment

Search TestGuy
   Tag Cloud   Advanced Search
Follow us


Explore TestGuy


NETA Certification Training


Help and Support