Covered line wire is used primarily for 600v secondary overhead power distribution lines. It is not an electrically insulated conductor and often considered a bare conductor.
Standards
ASTM B-230 - Aluminum 1350-H19 Wire for Electrical Purposes
ASTM B-231 - Concentric-Lay-Stranded Aluminum Conductors, Coated-Steel Reinforced (ACSR).
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