A doorbell transformer wiring diagram is an essential visual guide for safely and correctly connecting a doorbell transformer. The transformer steps down the standard household voltage (usually 120V or 240V) to a lower voltage (typically 16V, 20V, or 24V) suitable for the doorbell chime. Without a properly functioning transformer and correct wiring, your doorbell won’t work, and there’s a risk of electrical damage or even fire. The diagram acts as a roadmap, ensuring that each wire connects to the appropriate terminal.
