Ключевые слова: abstract, air, architecture, art, background, black, build, cable, ceiling, cold, concrete, conduit, conduits, connect, construction, design, electric, electrical, electricity, energy, equipment, industry, installation, installed, interior, light, line, metal, pattern, pipe, pipeline, power, professional, room, safety, security, silver, site, steel, structure, style, system, technology, texture, tube, wall, wire, wires, wiring, work,