Ключевые слова: adapter, appliance, background, black, cable, circuit, closeup, concepts, connection, conservation, consumption, cord, current, design, device, efficiency, electricity, electronic, energy, equipment, hold, home, house, household, indoors, industry, insert, interior, light, line, nobody, object, outlet, pin, plastic, plug, power, safety, save, socket, space, supply, switch, technology, voltage, volts, wall, white, wires,