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Workforce LibreTexts

2.1: Symbols Used in Schematic Diagrams

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    • Contributed by Camosun College
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    Electrical symbols may be different for each manufacturer, but in most cases they are standard. Every manufacturer’s diagram should have a symbol identification chart or “key” located in the wiring book. Some examples of electrical symbols are shown in Figure 1.

    Figure \(\PageIndex{1}\): (CC BY-NC-SA; BC Industry Training Authority)
    1. Common electrical symbols