Doorbell Transfromer Located Behind One Chime - Needing to Upgrade Transformer - ?'s

[Homeowner79]

Good day to all. Hopefully I am in the right place, and just wanted a bit of guidance/help/suggestions. We have a 2008 two story house that has one front doorbell and two chimes, one up and one down. No basement. We purchased a video doorbell and after I installed it, the chimes were not working properly. I found the transformer upstairs, in the electrical box behind the chime. Hot, neutral, ground are all present and connected to the transformer, along with the low voltage wires leading to the other chime and the doorbell. The transformer was a 16v 10VA, which is probably a low VA to begin with I have discovered. I called the doorbell manufacture and they said their recommendation was to pickup a 24v 20va transformer and use it. I did, but now I hear a slight hum/buzz downstairs by and in the wall of the lower chime. Almost like a running fridge noise.

After doing additional research, it appears I should use a 16V 30VA transformer, which I purchased one, Newtone C907, and have it now. My question is, the new 30VA transformer is fairly large and I would have to really cram it in the box behind the chime, along with the other wires. There would still be room around it, but not much...depth with all the wires is the tricky part. Upon doing further research, I have read that the transformer should not be behind the chime, as low voltage wires and 120v wires should not be sharing the same box.

Is this correct? Can I use the new transformer in the box behind the chime? If so, it will be a tight fit.

Thank you.

 

[Dennis Alwon]

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