[retiredguy123]

Originally Posted by jimbomaybe

I think on new construction they use foam board insulation with an air space between the drywall and foam board and thats where they run the power, I am not an electrician but mixing both power and signal in the same bay would call for carful consideration, last place I lived code required everything needed to be in EMT , metal conduit, good luck

Electrical wires are not required to be in conduit.