Wood frame construction has often enjoyed a competitive advantage over concrete in low-rise residential buildings. A new type of electrical wiring shows promise of reducing this advantage. In most parts of the country when homes, apartments, townhouses, and similar building are constructed with wood framing the electrical work is done by simply running plastic coated cable through the stud spaces to lights, outlets and switches. Electrical code requirements, however, normally require conduit to be used when the same types of buildings are constructed of concrete, thus giving wood frame construction a wiring cost advantage over concrete. There are some new inexpensive wiring materials developed by the National Space and Aeronautic Administration (NASA) that are suitable alternatives for conduit in concrete construction. These are flat elements, some of which have adhesive on one side to permit fastening to the surface of a wall or ceiling. The main wire used to carry power at 110 volts may be located behind baseboard molding or under carpets. Use of this main wire is still in the developmental stage.