Standardized Symbols for Electrical Circuit Diagrams

Standard:
Revised:
  • 2014-08-19
 
  • CURRENT
Publisher:
  • SAE International
Scope:

This SAE Recommended Practice identifies graphic symbols used in electrical circuit diagrams. The symbols aid troubleshooting electrical systems.

Rationale:

Industry adoption of this symbology convention will aid in the understanding of electrical circuits by engineers, OEMs, suppliers, fleet technicians, and the industry generally. Standardization will mitigate misinterpretation within the industry.

This surface vehicle standard applies to medium- and heavy-duty commercial vehicles.

The benefits of standardization are:

  • The symbols can be used universally
  • Communicaiton of electrical information is enhanced
  • The symbols are supported by text annotations for identification and operating notes.
  • The symbols can display clearly on electronic display monitors and can be printed legibly.
History:
Standard Published Revision Status
J2221_201408 2014-08-19 Latest Revised
1998-06-01 Historical Issued
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