AC90-HL cables are for open and concealed wiring in dry locations only. For use in cable troughs and ventilated flexible cableway. Minimum recommended installation temperature is minus 40 Deg C. Maximum conductor temperature is 90 Deg C. Approved for use with ceiling fixtures. Approved for use in and relating to Class I, II, and III, Division 1 and 2 Hazardous Locations. Compact bare AA-8000 series aluminum alloy, Class B stranded per ASTM. Abrasion, heat and moisture resistant, -40 Deg C rated cross linked polyethylene insulation (XLP). The insulated conductors and a bare aluminum bonding wire cabled together wrapped with a paper or Mylar tape. Interlocked aluminum applied over the cable assembly armour.