Description: For installations that require a cable to withstand high temperatures in an overhead transmission line, ACSS/AW - ALUMINUM CONDUCTOR STEEL SUPPORTED/AW CORE - 266.8 KCMIL provides the best possible answer. It can work without any loss of power at temperatures up to 250o C. It has an aluminum clad steel core. This gives it better resistance to corrosion and allows it to offer a higher ampacity. The steel support makes it more rigid and reduces the amount of sag over longer distances. This creates savings for anyone that uses it.