UL Subject 6A
Standard for Electrical Rigid Metal Conduit - Aluminum, Bronze, Stainless Steel (Bulletin, 8/18/2000)
standard by Underwriters Laboratories, 08/18/2000
UL Subject 493
Standard for Thermoplastic-Insulated Underground Feeder and Branch-Circtui Cables (Bulletin, 8/16/2000)
standard by Underwriters Laboratories, 08/16/2000