Ключевые слова: background, blue, cable, cables, color, connect, connection, copper, current, cut, cutting, electric, electrical, electrician, electricity, energy, gloves, hands, handyman, hold, human, industrial, industry, isolated, line, maintenance, man, metal, minus, network, pair, parallel, plug, plus, polarity, power, protective, red, repairman, supply, technology, white, wire, wireman, wires,