Specifications include, but are not limited to: The specification covers the (Southwire Company) 959.6 ACSS/TW Overhead Electric Conductor used by DME for Transmission Lines. The design is to operate continuously at elevated temperatures up to 250° without loss of strength and the conductor final sag will be less under emergency loading than ACSR/TW. In addition, the conductor is designed for excellent self-damping properties, and the final sags are not affected by long-term creep of aluminum. SPECIFICATION: The ACSS/TW bare conductor shall meet or exceed the following ASTM specifications: B -500 Metallic Coated Stranded Steel Core for Aluminum Conductors, Steel Reinforced B -609 Aluminum 1350 Round Wire, Annealed and Intermediate Tempers, for Electrical Purposes B-803 High–Strength Zinc–5% Aluminum-Mischmetal Alloy-Coated Steel Core Wire for Aluminum and Aluminum-Alloy Conductors, Steel Reinforce. B857-Shaped Wire Compact Concentric –Lay-stranded Aluminum conductors, Coated-steel Supported (ACSS/TW).