Basic Relay Wiring Diagram. Smartdraw comes with pre made wiring diagram templates. 60 new 87a relay wiring diagram relay basic electronic circuits electrical wiring diagram.
Typical wiring diagram line diagrams show circuits of the operation of the controller. By looking at the diagram below we can go through the basic concept of a relay and how they operate. This diagram was designed for 12 volt systems but can also be used for 6 volt systems.
The following schematic shows the basic circuit.
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. Typical wiring diagram line diagrams show circuits of the operation of the controller. By vallery masson updated on september 23 2021. Customize hundreds of electrical symbols and quickly drop them into your wiring diagram.