This standard publication covers specific requirements for silicone rubber insulated stranded wire@ designed for the internal wiring of high reliability electrical and electronic equipment. This standards publication addresses 600 V (Type S@ ZHS) and 1000 V (Type SS@ ZHSS and SSB) wire and permits continuous conductor temperature ratings of -55?C to +150?C with tin-coated copper or -55 ?C to + 200 ?C with silver-coated copper. These types of hook-up wire are used when the following requirements are called for: ? High temperature resistance ? Low temperature resistance ? Good flexibility and flex life ? Solder iron resistance for easier solder terminations without potential damage ? Type ZHS@ and ZHSS are used for applications requiring low smoke and zero halogen requirements