Portable, flexible, and movable electrical power distribution systems composed of electrical raceways, electrical power controllers, electric wires and cables, power connectors, insulated electrical connectors, electrical connectors, and power distribution hubs having electrical sockets and plug connectors; wiring systems for over-floor power distribution composed of raceways having exposed electrical contacts; floor power systems and accessories therefor, namely, electrical raceways, electrical power controllers, electric wires and cables, power connectors, insulated electrical connectors, electrical connectors, and power distribution hubs having electrical sockets and plug connectors; medium voltage power distribution systems comprised of electrical power raceways configured primarily for placement over floor coverings; electric raceways, namely, floor-mounted, low-profile raceway systems comprising electric raceways having a transition ramp and elongated electric rails; power connectors in the nature of modular connectivity power pickups for connecting to electric raceways along their length; power controllers for supplying electric power to electric raceways; electrical power extension cords in the nature of connection cords; electrical power extension cords in the nature of power pickup cords; low voltage tabletop power distribution hubs having electrical sockets and plug connectors; all of the foregoing for use in office and classroom settings