Ключевые слова: black, blue, box, breaker, cables, circuit, close, closeup, color coded, components, concept, connection, construction, control, device, distribution, electric, electrical, electronic, energy, engineering, equipment, hardware, industrial, industry, inspection, installation, instrument, machinery, maintenance, management, mechanical, modern, panel, power, red, safety, secure, structure, supply, system, technical, technology, up, voltage, wires, wiring, yellow,