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Changes to the 2020
National Electrical Code®
With Tom and Tim Henry
•Read Tom Henry's comments on the changes he feels will effect the classroom.
•The Ampacity Tables revert back to Table 310.16
•New box fill calculation for equipment grounding conductor fill 314.16(B)(5)
•New sections where AFCI is required throughout the 2020 NEC.
•Many new sections where GFCI is required throughout the 2020 NEC.
•Many new definitions not only in Article 100 but several throughout the 2020 NEC.
•Several new sections requiring approval by the AHJ.
•Several new sections requiring identification and marking of electrical equipment.
•More protection for first responders
requiring shut down of electrical systems before
entering the structure.
•Four new 2020 NEC Articles:
Article 242 Overvoltage Protection
Article 311 Medium Voltage Conductors and Cables
Article 337 Type "P" Cable
Article 805 General Requirements for Communications Systems
is titled Changes to
the 2020 National Electrical Code®
#1038 - 2020 Changes to the National Electrical Code®
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