Bare Copper Stranded Conductor (ACC)3
Specification: BS 6360
Production: Annealed high conductivity copper strands
Application: Mainly for earthing

Bare Aluminium Stranded Conductors (ACC)
Specification: BS 215, Part 1
Production: Seven or more same diameter aluminium wires twisted together in concentric layers
Application: Overhead power transimission

Aluminium Conductors Steel-Reinforced (ACSR)
Specification: BS 215, Part 2
Production: Six or more aluminium wires biult up in concentric layer(s) around galvanised steel wire or galvanised steel strands
Application: Overhead power transimission