Sub panel located in bedroom wall, back of this wall is bath tub, we were discussing if this location was ok for a panel.
This panel is not located in the bathroom.

If you are asking if the panel can be in this location by code. I would say yes if you have the required work space in front of the panel. Would I put it there? No I've seen to many beds and chest of draws in front of the panel. Also I do not like the idea of the tub wall on the backside of the panel.
Al

Al,

Yes this is what we were talking about, nothing in the code preventing that location, however, we see these installations and don't like them, at least the subject got everyone in the shop talking about code concerns.
We have a large number of tract homes built back in the 60's that have sub panels in closets, behind cabinets, and in bathrooms, selecting a good location is something to consider.

LK, I know what you are up against. Tract homes built on slabs are rare up here in New England, but there are some. They can be a real challenge to find a location for the panel. I always try to avoid the tub wall. My concern is excess moisture getting to the panel. I also try to go close to the bedroom door. That way you have a chance of the work space not being blocked by furniture. If you have room in the hallway that works well. After you leave no telling what the homeowner will do. Should make for some good discussion for your crew. Hope you can make it work.
Al

Al,

My concern is the same, excess moisture getting to the panel.
I would use this location, if a vapor barrier is installed on the bathroom side, however with old work this can be a problem.

If you have that much moisture getting behind the tub there is a problem. There should be less moisture there than in many basements. I guess I am saying I don't have a problem with it.

Scott,

With the older slab homes built in the 60's , when the bathroom is heated up, and the bedrooms are cool, anything in that wall gets damp, we have pulled out panels that were rust buckets, that is why i don't like that location, We had a good discussion on panel locations last week, and you would be suprised where they locate some panels.

I've had problems with moisture in panels in these locations tripping GFCI breakers.
The cooler room next to the steam and heat of the bathroom would cause some condensation in the panel and would cause the GFCI breakers to trip.

LK ---

There are no good places for sub panels.

I don't view furniture as a problem. You can move the furniture or you can turn the breaker feeding the panel off.

Considering tht some panels are mounted outside, moisture from a tub shuold not be a problem.

George,

It's not the moisture from the tub that causes the problems, It's the hot bathroom, and the cooler bedroom that causes the dampness, and it can not only rust out a panel over time, it causes GFCI's to trip,
as A-Line noted.
An outdoor panel is not exposed to the same extreme conditions.

What about a flush mount panel that is mounted in an exterior wall? Would they not be subject to the same conditions? Cold exterior and warm interior in the winter . And the reverse in the summer. And the panel is too deep to allow any insulation to be placed between the panel and the wall sheathing.

Yes HL, we don't have many of those installations in this area, however they have the same problem of getting damp.