Ключевые слова: bolt, brass, cable, circuit, conducting, conductor, connect, connecting rail, connection, construction, copper, danger, detail, earth, electric, electrical, electricity, electrode, energy, equipment, green, green color, ground, grounded, grounding, grounding cable, industrial, industry, installation, isolated, line, metal, outdoors, power, protection, rod, safety, signal cable, signal transfer, supply, system, technology, voltage, wire, wires, yellow green,