Doorbell transformer in attic

[mivey]

Is that transformer permitted on a 20 amp circuit?

per ...

 

[walkerj]

I have never seen the doorbell transformer NOT in the attic.

 

[Dennis Alwon]

I have never seen the doorbell transformer NOT in the attic.

I bet most of the house there are on slab. I have seen them in crawl spaces mostly but a few in closets and in the attic as well. I avoid the attics and usually install them just inside the entrance to the crawl space

 

[benaround]

Maybe it is not an attic, it could be an unfinished second floor for small children.

 

[infinity]

per ...

I thought that the maximum was 15 amps but it's actually 20 amps. 725.127

 

[Cavie]

I have never seen the doorbell transformer NOT in the attic.

Mounted to the panel when inside the garage. Mounted to a blank cover in the kit dome ceiling. Mounted to a blank cover in the utility room. Mounted to a blank cover in the garage.

 

[Jim W in Tampa]

Mounted many in a 2 gang deep steel box and then placed the chime over the box. Fast, easy and out of site

 

[kbsparky]

I prefer this unit --> mounts right to a single gang recessed box.

 

[readydave8]

Mounted many in a 2 gang deep steel box and then placed the chime over the box. Fast, easy and out of site

Do you mount the transformer inside the box? And if so does that put the 120v and the 12v inside the same box? Or do you mount the transformer to the outside of the box with the primary leads inside the box (1/2" ko installation?) And if so can you change the transformer out once the wall is finished? Or am I not understanding your method at all, and if so would like to know what it is.

Thanks.

 

[Jim W in Tampa]

You would need 600 volt wire on secondary. Inspector suggested the idea and as long as no other wires in box he never pushed the voltage issue. Put 4 square cover over box.

 

[1793]

Mounted many in a 2 gang deep steel box and then placed the chime over the box. Fast, easy and out of site

I have seen this type of install before.

You would need 600 volt wire on secondary. Inspector suggested the idea and as long as no other wires in box he never pushed the voltage issue. Put 4 square cover over box.

My concern is with the heat that builds up.

 

[electricmanscott]

Mounted many in a 2 gang deep steel box and then placed the chime over the box. Fast, easy and out of site

I'd put it in the attic before I did that.

 

[Jim W in Tampa]

I'd put it in the attic before I did that.

Why ? The transformer itself puts out very little heat. Attics will easily reach over 100 degrees. Look at the link in post 28

 

[donselectric]

where did he find the non insulated staples....

 

[480sparky]

I always put mine on the box I install for the furnace disconnect switch. That will always be accessible and visible.

 

[Jim W in Tampa]

Was there ever a fire from a transformer in the attic ? Only problem i see is that heat would cause it to fail sooner. There are recess cans that have transformers and there load is far longer than that few seconds on a door bell.

 

[jumper]

I always put mine on the box I install for the furnace disconnect switch. That will always be accessible and visible.

Hmmm. 422.12

 

[Jim W in Tampa]

I tried to call nutone today to get there answer but not waiting 20 minutes.

 

[480sparky]

Hmmm. 422.12

I'm not gonna lose sleep over the amp draw of a doorbell transformer.

 

[Pierre C Belarge]

I'm not gonna lose sleep over the amp draw of a doorbell transformer.

Sorry to hear that...you must not sleep well at all.