![]() ![]() ![]() Unfortunately those people have painted themselves into a corner, tough luck for them. It's all the rage these days to destroy all utility space in homes in a mad quest for more listable square footage to puff up resale value. Obviously both of these mounting types require unfinished "utility space" in your home where such things are not an aesthetic misfit. Again AC mains is on one side, low voltage on the other. Mounts on the face of a 4x4 metal box, replacing the normal lid.Obviously this requires a metal box somewhere whose sides are exposed. AC mains wiring is inside the box, 24V is outside. Mounts to a knockout on the side of a metal box.Here are 2 popular form-factors for 24V transformers: The 24V low-voltage wiring can follow the relaxed rules for low-voltage power, and be installed like thermostat wire. Mounting a new transformer has to follow Code and its labeling and instructions, particularly where the AC mains side of the transformer is concerned. Those would be the leads of the existing bell transformer.Įven if the transformer is mounted somewhere awful, like on the back side of a steel outlet or light junction box behind a finished wall or ceiling, at least its mains power junction should be accessible and therefore disconnectable.Generally, you are controlled by where the existing wiring is located. "In theory" by inspecting every connection along that circuit's path you'd eventually find a pair of light-gauge stranded wires spliced into the circuit somewhere. With the supply circuit identified, and with only that circuit powered, you could trace that circuit with a the tone pickup tool you've been using, a non-contact voltage tester, the live wire warning in a stud finder tool, etc. If the circuit isn't marked, turn off circuits one at a time until the doorbell doesn't work anymore. Turn off all circuits in the building except the one that powers the doorbell. Since tracing the low-voltage doorbell wire back to the transformer isn't working, maybe you can work the other direction. This is analagous to payload capacity of a vehicle: the actual load should not exceed the carrying capacity. It's important for the voltages to match and for the VA rating of the transformer to be higher than the VA rating of the loads (the sum of the chime and the Ring device). The doorbell VA rating indicates how large the doorbell load may be. ![]() The transformer VA rating indicates how much load the transformer can safely support. It's OK (desirable, actually) if the new transformer's VA is higher. I don't like that but one day i will find the old one and remove it, i will use an endoscope camera with a led light to help me. My quest following the cables always ended up going into a finished ceiling so i could not find the old transformer. I wired the new transformer and it is working. I ended up cutting the cable near an outlet in the basement drop-ceiling. Also, does the chime can handle the new transformer? Even if the VA is higher? The basement got a suspended ceiling so i can just cut the wire near a electrical box and wire the new transformer there but it would trigger me to know there is a dead cable with electricity somewhere. I have seen a transformer and some of them can be attached to the outside of a switch box/electrical box. I have also a utility room with the ceiling not finished and i cannot see anywhere my cable so it is getting transformed somewhere before. I have looked inside and outside of the electrical panel. I have check inside the light fixtures, can it be in the light switch? Also, my chime says : "use with transformer 16V 10VA", i must change the chime too since my new one is 16V 30VA? It is hard to follow after that even with the tone because all cables related to that breaker will ring too. Attic is hardly accessible, in summer it's worse. I have no idea after if it goes back up or in the attic. I have opened the chime and i can see the transformer wire going in my basement, i did follow it using a tone device and it goes inside of a finished room. I need to find my doorbell transformer in order to change it for a more powerfull one (ring pro doorbell). ![]()
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