Ключевые слова: background, box, cable, ceiling, channels, cinder, conduit, connect, construction, control, design, distribution, electric, electrical, electricity, energy, engineering, equipment, flexible, grid, hand, hard, industrial, industry, installation, installed, junction, line, maintenance, metal, metallic, meter, new, old, panel, pipe, power, power lines, service, steel, system, technology, telephone, texture, tube, utility, wall, white, wire, wiring,