Southwire stranded aluminum building wire (55418401, Millennium part 542394) is a 4/0 AWG, 600 V conductor supplied in a 40 ft cut length. Aluminum stranding keeps the pull weight and cost per foot well below equivalent copper on heavy feeder and service runs, while the 4/0 size carries the ampacity needed for cabinet, generator and service entrance feeds at telecom sites. Short cut lengths suit power drops inside huts, pedestals and equipment enclosures without buying a full reel. Millennium stocks it alongside THHN wire and other Southwire building wire.