UL 493 BULLETIN-2007《UL安全标准.热塑塑料绝缘地下馈电和支线电路电缆》

These requirements cover 14 - 4/0 AWG single-conductor PVC-insulated and -jacketed underground feeder and branch-circuit cable and flat multiple-conductor PVC-jacketed underground feeder and branch-circuit cables containing two or three 14 - 6 AWG PVC-insulated circuit conductors with or without a grounding conductor. These Type UF cables are intended for use in accordance with Article 340 and other applicable parts of the National Electrical Code ANSI/NFPA-70 in wiring systems operating at a potential of 600 V or less. Submersible water-pump cables and multiple-conductor assemblies to which a type-letter designation is not assigned are also covered in these requirements. Multiple-conductor cable that is marked "UF-B" has a 75鳦 (167鳩) jacket and conductors with insulation of 90鳦 (194鳩) dry and at least 60鳦 (140鳩) wet locations. Multiple-conductor cable that is marked "UF" has a 60鳦 (140鳩) jacket and conductors with insulation for 60鳦 (140鳩) dry and wet locations. Single-conductor cable