Wiring Diagrams for Doorbells - Do-it-yourself ...
Doorbell Transformer Wiring Diagram. A hardwired doorbell includes a small transformer that converts the alternating current (AC), to direct current (DC) for the doorbell chimes. A small, 16 awg wire runs from the door button to the chimes. When pressed, the button will send the transformer output through the chimes, sounding the bell ...