transformer color codes 3 wire door chime

This is the transformer supplied in contractor grade wired door chime kits. The NuTone C905 has a rating of 16V – 10VA these are standard specs for most single 2-note chimes.Wiring a Single Doorbell Chime to a Single Button For safe wiring practices, consult the National Electrical Code ® and your local building inspector, or licensed electrician.ġ. Before beginning work, turn power off at the breaker panel or fuse box to avoid injury. Depending on the layout of your home and location of doorbell components, choose if individual or bundled wires work better ( ref. Bell wire comes as separate individual wires, while thermostat wire has a jacket to keep the wires bundled together. doorbell parts section below for more information).

The red wire shown in the diagrams can connect to either terminal of the transformer and push button ( ref. The output side of the transformer doesn’t have positive and negative terminals.Either terminal of the push button can be mounted to the red or white wires shown in the diagram ( ref. Doorbell push buttons don’t have a positive and negative.These are just the products we chose to work with, but the provided wiring diagrams and in-depth description of parts are universal and should apply to all brands of low-voltage wired combination doorbells. The following doorbell wiring information focuses on combination doorbells (front and rear chime in a combined unit) and uses Broan-Nutone, more specifically the NuTone doorbell parts as reference.

Transformer color codes 3 wire door chime