I have a space between walls that is about 14" deep and 8 foot wide, and goes from the floor to the ceiling. This space is on the second floor. Petty much in the center of the house. The space contains a sealed round air duct and also PVC water supply pipes. They go from the attic to the first floor in this space.
I will have an electrician rewire the house going from aluminum to copper. Can the wires be run in this space as well?