Structure
Conductor: Bare annealed copper or tin-plated (Class 2 solid, Class 1 semi-flexible, or Class 5 flexible)
Insulation: Solid or foam polyethylene
Shield: Bare or tin-plated copper braid
Sheath: PVC compound, and the sheath color is typically white.
Standard
6 IEC / 17 C MIL / 3501 C J