NFPA 70 : 2020现行
National Electrical Code (NEC) Softbound
出版：National Fire Protection Association
专家解读视频
Introduction Chapter 1 General Chapter 2 Wiring and Protection Chapter 3 Wiring Methods and Materials Chapter 5 Special Occupancies Chapter 6 Special Equipment Chapter 8 Communications Systems Chapter 9 Tables Informative Annex A: Product Safety Standards Informative Annex B: Application Information for Ampacity Calculation Informative Annex C: Conduit, Tubing, and Cable Tray Fill Tables for Conductors and Fixture Wires of the Same Size Informative Annex D: Examples Informative Annex E: Types of Construction Informative Annex F: Availability and Reliability for Critical Operations Power Systems; and Development and Implementation of Functional Performance Tests (FPTs) for Critical Operations Power Systems Informative Annex G: Supervisory Control and Data Acquisition (SCADA) Informative Annex H: Administration and Enforcement Informative Annex I: Recommended Tightening Torque Tables from UL Standard 486A-B Informative Annex J: ADA Standards for Accessible Design Index
