Bare copper conductor meets or exceeds the following ASTM specifications:
ASTM B-1 (hard drawn)
ASTM B-2 (medium hard drawn)
ASTM B-3 (soft or annealed)
ASTM B-8 (concentric lay stranded)
ASTM B-33 (tinned)
ASTM B-787 (combination strand
Bare Copper Conductor suitable for use in electrical grounding systems and on insulatorsfor overhead transmission and distribution applications. Stranded conductors offer greater flexibility than solid.
Bare copper conductors are compressed concentric-lay-stranded consisting of one or more layers of wire wrapped helically around a straight round central wire.