Maryland 2023 NEC Changes Part 2

5 Hour Course

After completing this Maryland-approved course, the participant will be able to apply 50 important changes to the 2023 National Electrical Code in common wiring practice.

Learning Objectives:

Outline the new declaration regarding standard overcurrent device ratings found in Chapter 2 of the 2023 NEC.
Identify changes to the standard ampere ratings in Table 240.6(A).
Describe the new requirement that surge protection devices indicate they are functioning properly.
Summarize the new requirements for overcurrent protection requirements for systems over 1000 volts ac, 1500 volts dc in Article 245.
Identify the new requirements for grounding and bonding in Chapter 2 of the 2023 NEC.
Identify updates, additions, and changes to Chapter 3 of the 2023 National Electrical Code.
Summarize the general requirements for wiring methods and materials for systems rated over 1000 volts ac, 1500 volts dc covered in Article 305.
Describe changes and additions to the exceptions for cables, raceways, or boxes installed in or under metal-corrugated roof decking found in Chapter 3 of the 2023 NEC.
Outline new requirements for installing screws and other fasteners in cabinets, cutout boxes, and meter socket enclosures found in Chapter 3 of the 2023 NEC.
Identify additions and changes to requirements for outlet boxes, underground boxes, and handhole enclosures found in Chapter 3 of the 2023 NEC.
Outline new requirements for insulated bus pipe and flexible bus systems found in Chapter 3 of the 2023 NEC.
List changes to uses permitted and not permitted for nonmetallic-sheathed cable.
Identify changed requirements for use and installation of rigid polyvinyl chloride conduit (PVC) found in Chapter 3 of the 2023 NEC.
Identify updates, additions, and changes to Chapter 4 of the 2023 National Electrical Code.
Describe the change in scope to Chapter 4 of the 2023 NEC.

Approved By: State Board of Electricians

2023 NEC Changes Part 2
- Chapter 2 [25 Activities]
  - 01. 220.110 Health Care Facilities. Receptacle Loads.
  - 02. 220.120 Marinas. Receptacle Loads.
  - 03. Article 225, Outside Branch Circuits and Feeders.
  - 04. 225.41 Emergency Disconnects
  - 05. 225.42. Surge Protection.
  - 06. 230.7 Other Conductors.
  - 07. 230.24(A) Clearances. Above Roofs.
  - 08. 230.30(B) Wiring Methods.
  - Additional Activities
    - 09. 230.62(C) Barriers.
    - 10. 230.67. Surge Protection.
    - 11. 230.71(B) Two to Six Service Disconnecting Means.
    - 12. 230.85 Emergency Disconnects
    - 13. Article 235, Branch Circuits, Feeders, and Services Over 1000 Volts ac, 1500 Volts dc, Nominal.
    - 14. 240.4(B) Overcurrent Devices Rated 800 Amperes or Less
    - 15. 240.6(A) Standard Ampere Ratings for Fuses and Inverse Time Circuit Breakers
    - 16. 242.9. Indicating
    - 17. Article 245, Overcurrent Protection for Systems Rated Over 1000 Volts ac, 1500 volts dc.
    - 18. 250.64(G) Enclosures with Ventilation Openings.
    - 19. 250.68(C) Grounding Electrode Conductor Connections.
    - 20. 250.118 Types of Equipment Grounding Conductors.
    - 21. 250.130 Equipment Grounding Conductor Connections.
    - 22. 250.130(C) Replacement of Nongrounding Receptacle or Snap Switch and Branch Circuit Extensions.
    - 23. 250.140 Frames of Ranges and Clothes Dryers.
    - 24. 250.148 Continuity of Equipment Grounding Conductors and Attachment in Boxes.
    - 25. 250.186 Grounding Service-Supplied Alternating-Current Systems.
- Chapter 3 [15 Activities]
  - 01. 300.4(E) Cables, Raceways, or Boxes Installed in or Under Metal-Corrugated Roof Decking.
  - 02. Table 300.5(A) Minimum Cover Requirements, 0 to 1000 Volts ac, 1500 Volts dc, Nominal.
  - 03. Article 305, General Requirements for Wiring Methods and Materials for Systems Rated Over 1000 volts ac, 1500 volts dc, Nominal.
  - 04. 310.15(B)(2). Rooftop.
  - 05. 312.10 Screws or Other Fasteners.
  - 06. 314.27(E) Weight-Supporting Ceiling Receptacles (WSCR) and Weight-Supporting Attachment Fittings (WSAF).
  - 07. 314.29(B) Underground.
  - 08. 334.10 Uses Permitted.
  - Additional Activities
    - 09. 334.15(B) Protection from Physical Damage.
    - 10. 334.40(B) Boxes and Fittings. Devices of Insulating Material.
    - 11. 344.28 Reaming and Threading.
    - 12. 352.10 Uses Permitted.
    - 13. 352.44 Expansion Fittings.
    - 14. Article 369, Insulated Bus Pipe (IBP)/Tubular Covered Conductors (TCC) Systems.
    - 15. Article 371, Flexible Bus Systems.
- Chapter 4 [10 Activities]
  - 01. 404.1 Switches. Scope.
  - 02. 404.2(C) Switches Controlling Lighting Loads.
  - 03. 404.14(D) Snap Switch Terminations.
  - 04. 404.16 Reconditioned Equipment
  - 05. 404.30 Switch Enclosures with Doors.
  - 06. 406.3(D) Receptacle Terminations.
  - 07. 406.4(G). Protection of Floor Receptacles.
  - 08. 406.6(D) Receptacle Faceplate (Cover Plates) with Integral Night Light and/or USB Charger.
  - 09. 406.9(A),(B) Damp Locations, Wet Locations.
  - 10. 406.9(C) Bathtub and Shower Space.
Course Completion
- Mandatory Questionnaire
- Certificate of Completion

Instructor Bio

Jerry Durham

Jerry previously served the state of North Carolina as a Level III electrical inspector and provided state-approved electrical training for electrical inspectors at both Alamance County and Guilford County (NC) Community Colleges. Jerry taught the Kentucky state-approved four-year electrical apprenticeship programs offered by the Independent Electrical Contractors (IEC) Trade School and Associated Builders and Contractors (ABC) Trade School, and served the state of Kentucky as a Master Electrician and Louisville Metro Code Enforcement Officer. Jerry is a Certified Distance Education Instructor (CDEI) and NCCER Core and Electrical Curriculum certified instructor. Jerry currently holds North Carolina and ICC electrical inspector accreditations and is recognized by the state of Washington as an approved electrical administrator.

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