... , or 6201alloy neutral messenger.3, Standards: ASTM B-230, B-231, B-232 and B-399 ICEA S-76-4744, Note ... :B-230 Aluminum Wire, 1350-H19 for electrical Purposes.B-231 Aluminum Conductors, Concentric-Lay-Stranded/B-232 Aluminum Conductors, Concentric ...