If you are talking about doorbell transformers they should be mounted in open air.
Attic rated doorbell transformer.
You can get metal or plastic ones that are ul rated.
If you want to verify the transformer get a voltmeter and test its input and output while the doorbell works.
A doorbell transformer is a small brass or silver colored box about 2 to 3 inches square with two to three terminal screws on the face.
They do get hot and need a way to cool.
If you just put it into the insulation that may be a problem.
Nutone s new line voltage doorbell connects directly to the line voltage of the home and.
If your doorbell is no longer working you may need to troubleshoot the transformer in order to perform the repair.
The attic is fine but a garage is better.
Preferably outside a junction box.
These installations require a transformer and often holes to be drilled in floors and door frames.
Also i d imagine the hottest point for the attic would be about 4 to 5 pm not noon.
The moment the doorbell breakers run up there and test the transformer.
Nutone doorbell installation time study.
I would put it into a junction or pull box.
Attic ventilation in line fans utility fans through wall fans.
The problem isn t the transformer per se it s finding the sucker 5 years later when you want to take it out.
It looks like a small metal box and can be silver off white or even brass colored.
An electrically wired doorbell requires a transformer to step down the 120 volt house circuit to the correct voltage and wattage required by your doorbell.
Most doorbells run on low voltage electricity.
The attic is insulated so the transformer will likely need an additional enclosure box i looked up the california electrical code 2016 but couldn t find a paragraph which would explicitly allow or disallow such installation and everything 1000v is considered low voltage by the code which doesn t help with search.
Jim port jim port april 19.