An electrical power or electronic data distribution system includes a power supply or electronic data module that receives electrical power or electronic data signals from a source, a flat-conductor strip for routing electrical power or electronic data along a generally planar surface such as a floor, wall, room divider, or ceiling, and a power or data output block. The power supply has a pair of power outfeed conductors, and the flat-conductor strip has a pair of generally planar electrical conductors in spaced arrangement, which are electrically coupled to respective power outfeed conductors. The output block has a pair of power-receiving contacts along a lower surface thereof, and an electrical receptacle at the output block, the receptacle being positioned above the lower surface. The power-receiving contacts electrically engage respective planar electrical conductors and convey electrical power to respective contacts of the electrical receptacle, for powering electrical or electronic devices.