Ключевые слова: 110, 220, abstract, ac, alternating, american, appliance, black, blue, cable, closeup, connect, connector, cord, current, dc, device, electric, electrical, electricity, energy, equipment, extension, focus, hand, interface, isolated, negative, outlet, pin, plastic, plug, power, rubber, selective, single, supply, type, us, v, voltage, volts, white, wire,