Ключевые слова: advice, ahead, arrow, attention, background, banner, black, board, cables, careful, caution, danger, dangerous, discharge, electric, electrical, electricity, energy, fence, gray, hazard, high, highvoltage, icon, lightning, loss, metal, power, powerplate, risk, safety, security, shock, sign, silver, sing, symbol, threat, triangle, triangular, voltage, warning, white,