Electrical Wiring Diagram Basics. Join learners like you already enrolled. Here are some of the standard and basic symbols for various components for electrical schematics.
Note that symbols are discussed in detail later. Rc red wire power 24 vac rh or 4 red wire jumpered power 24 vac w white wire for heating enable y yellow wire for cooling enable g green wire controls fan on auto. The earth wire which is located between the live and neutral wire provides a safe escape route for leakage current from a circuit as a result of electrical fault or poor connection.
Loop in as per diagram above.
Each page of the wiring diagram shows the exact wiring for different sections of the control panel. Dashed lines indicate a single purchased component. The radial lighting circuit has 3 common wiring options which may be mixed at will. It shows how the electrical wires are interconnected and can also show where fixtures and components may be connected to the system.