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b_r
Doorbell and new set of chimes

Currently, I have a front doorbell button and a back doorbell button. I have a chimes unit on the first floor and a chimes unit on the second floor. Pressing the front doorbell will cause both chimes to "ding-dong" and pressing the back doorbell will cause the chimes to "ding." This works as expected.

I want to install a chime unit on the third floor.

One concern I have is the doorbell transformer won't be able to drive all three chime units. How do I determine which transformer I need?

I'm also concerned that if I do need to upgrade my transformer the current wiring won't be up to snuff. Given a transformer, how do you determine the appropriate doorbell wire?

Brad

canuk
Re: Doorbell and new set of chimes

This is probably how things are now.
For the 3rd additional chime ( sounding device ) connect 3 wires like the diagram shows between 1&2.
For this you can use 18awg/2 or 18/3 bell wire (LVTN) or for thermostat cable. Depending on your local codes check to see if the cable needs to be plenum rated.

Also depending on the exisiting transformer you might need to change to an 18 - 24voltAC to drive all 3 sounding devices.

Hopefully this helps.:)

b_r
Re: Doorbell and new set of chimes

OK, so I did want you said and used 18 gauge wire and I've just finished replacing the runs to the sound devices.

I have a sounding device that says on it, "Use low voltage transformer for safe operation," and it even has a little diagram on it the shows how to wire the front and back doorbells. Where the transformer is on the diagram it says 10-16v.

Should I assume that if I upgrade my transformer to 18-24v, my sounding devices will have to be upgraded as well, or is the real issue that the sounding device is calling for a low voltage because of the lighter gauge wires?

Brad

canuk
Re: Doorbell and new set of chimes
b_r wrote:

OK, so I did want you said and used 18 gauge wire and I've just finished replacing the runs to the sound devices.

I have a sounding device that says on it, "Use low voltage transformer for safe operation," and it even has a little diagram on it the shows how to wire the front and back doorbells. Where the transformer is on the diagram it says 10-16v.

Should I assume that if I upgrade my transformer to 18-24v, my sounding devices will have to be upgraded as well, or is the real issue that the sounding device is calling for a low voltage because of the lighter gauge wires?

Brad

No --- you shouldn't need to change any sounding device and has nothing to do with the 18 gauge wire. The only reason it was mentioned you may need to upgrade the transformer was the addition of the third unit. The existing transformer may not have enough power to drive all 3 and with some expectation of the long run to the third floor will be some voltage drop.
If the existing transformer is 10 volts --- try the 16 volt or you may need an 18 volt.

A. Spruce
Re: Doorbell and new set of chimes
paretoslaw wrote:

Why more volts rather than more VA has been suggested is beyond me.

Maybe because transformers are rated in volts? :confused:

canuk
Re: Doorbell and new set of chimes
paretoslaw wrote:

Why more volts rather than more VA has been suggested is beyond me.

paretoslaw wrote:

Transformers are rated by volts and VA........... Stick with the rated voltage and increase the VA if need be.

Increasing the voltage is crappy advice.

Hmmm --- I wonder who this poster is ?
Perhaps ----- Leslie ????????:rolleyes:

As you so eloquently suggested sure it can be done that way.
However , the most connomly stocked transformers by retail outlets are typically only 10 va which is not nearly enough for 3 sound devices and voltage drops.
So with the higher voltage minus voltage drop would be better than the lower voltage transformer.

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