Introduction to Electrical Schematics

The first lesson teaches about input, logic, and output devices, and the state in which symbols are drawn on electrical schematics.

Electrical Schematic Symbols – Input Devices

The second lesson presents the symbols for various manually and process actuated input devices and how they are represented on an electrical schematic.

Electrical Schematic Symbols – Logic and Output Devices

The third lesson defines the function of logic and ouput elements of a control circuit and presents the symbols for various logic and output devices..

Interpreting Electrical Schematics

The fourth lesson describes the steps for interpreting the relationships among the input, logic, and output components of an electrical schematic.

Introduction to Electrical Diagrams

The fifth lesson in the Electrical Print Reading Library, and the first lesson covering electrical diagrams presents information about the purpose of various types of electrical diagrams and how to interpret the information in the title block. It also explains how to make electrical drawing revisions.

Building Electrical Diagrams

The sixth lesson presents the different views used in electrical diagrams as well as how to identify components, cables, and conduits. The cable chart is also presented.

Single-Line Electrical Diagrams

The seventh lesson presents information regarding how to identify loads, equipment, and isolation breakers on a single-line electrical diagram.

Wiring Diagrams

The final lesson presents information how to identify components, equipment, wires and cables on a wiring diagram. It also explains how to relate a wiring diagram to the installed hardware and how to use diagrams for maintenance and troubleshooting problems.