Duplex, Triplex or Quadriplex assembled, hard drawn 1350 aluminum conductors. Black cross-linked (XLP) polyethylene insulation on phase conductors and sold yellow (XLP) insulation on the neutral conductor for identification.
Aluminum is an AAC. With ICEA S-66-524, Park 3 Part. 3.6. 1350 Aluminum conductor XLP insulation 90°C