I was recently roughing in a remodel project. I placed my sub panel behind a door in a Powder Bathroom. I had all my clearances met, and the panel was a good 10ft from the nearest water source, and the location seemed perfect. The Inspector didnt like the fact that the sub panel was in a bathroom, and made me turn it around so that it was now behind a door in the Master Bedroom. Where in the code book does it tell me where I can and cant put Sub Panels. I know I've seen Sub Panels in Bathrooms before, it's normally not my first choice, but on this particular project, it just seemed to make sense.