Figure 2-6 shows some more standard electrical
symbols. They may also be used in construction
drawings but will most often be seen in other types of
drawings, such as schematic diagrams. The symbols in
figure 2-6 were selected from ANSI Y32.2-1975. This
standard gives the following information about the
symbols that may help you understand them better:
Graphic symbols are used to show the
functioning or interconnections of a circuit graphically.
Figure 2-6.Graphic symbols used in electrical and electronic diagrams.