Recommendations for door bell mains transformer?

[Mr_T25]

Hi

Could I please have some personal recommendations for a mains door bell transformer that people here have installed? I am looking for the transformer to provide power to 3 internal bell sounders if possible given the size of the property.

I will probably be using 0.75mm two core cable given that two of the cable runs to the sounds will be about 20-30m each and the other about 5-7m (these distances are from the doorbell and refers to cable going around corners etc rather than line of sight to the sounder).

Could someone also please confirm how these should be wired, is it one cable from the push button to the transformer and then three cables out from the transformer to each bell sounder OR some other way?

 

[chivers67]

https://www.tlc-direct.co.uk/Main_I...imes_Index/Door_Bells_and_Pushes_1/index.html Contactum do one

 

[Mr_T25]

Which one do you recommend for what I am trying to achieve as there are several there?

Is it a better idea to get it wired into a module which goes into the consumer unit or have a standalone transformer?

 

[chivers67]

A Standalone transformer is easier to maintain.

 

[JohnD]

If you want, you can put a "consumer unit" one into a small DIN enclosure.

You might want to rewire to different terminals if you get a bell of different voltage, so easy access can be important.

As it's not a CU I see no reason you can't use an insulated enclosure, say a 4-way with blanks if needed.

https://www.tlc-direct.co.uk/Main_Index/Consumer_Units_Index/Wylex_Enclosures/index.html

mine looks like this but I think it has several voltage tappings (is for an entryphone)
https://www.tlc-direct.co.uk/Products/VE753.html

If you put a transformer (or anything else) in a CU the cable inside must be mains-rated and insulated, not "bell wire"