Electrical Drawing
This page is collection of different source found in internet.
References
=> https://symbols.radicasoftware.com/
=> https://www.edrawsoft.com/how-to-read-electrical-drawing.html
=> https://control.com/technical-articles/electrical-symbols-and-what-they-mean-to-controls-engineers/
=> https://instrumentationtools.com/how-to-read-an-electrical-wiring-diagram/?utm_content=cmp-true