RedVector JCOM-00150

2026 NEC Changes: Enclosures and Wiring Methods

2026 NEC Changes: Enclosures and Wiring Methods

1 hr. Online Course

Level: Intermediate

Item#: JCOM-00150

SME: Ryan Jackson

The 2026 NEC introduces subtle yet critical changes that could turn routine installations into costly field corrections if overlooked. This course examines key updates to enclosures and wiring methods, including new restrictions on service conductors passing through non-service equipment, revised accessibility requirements for recessed boxes, expanded listing requirements for cable support hardware, and updated rules for MC cable in wet locations and NM cable in commercial applications. Participants will also learn about modified bending radius calculations for flat cables, new termination requirements for rigid and intermediate metal conduit, allowances for larger non-metallic raceways, and prescriptive clearance requirements above cable trays.
Course Objectives

By the end of this course, you'll be able to:

  • Explain when service conductors are allowed in enclosures with other conductors.
  • Describe when boxes are required to be rated for ceiling fans.
  • Recall the requirements for wiring accessibility in boxes.
  • List what types of support hardware require a listing.
  • Describe when MC cable is allowed in wet locations.
  • List the requirements for NM cable in other than dwellings.
  • Recall the bending radius requirements for cables.
  • Explain the requirements for terminating rigid metal conduit and intermediate metal conduit.
  • State the rules for RMC and IMC fittings.
  • List the allowable sizes for various non-metallic raceways.
  • Describe the free space rules around cable trays.
SUBJECT MATTER EXPERT: Ryan Jackson
Ryan Jackson Photo
Ryan Jackson is a combination inspector in the Salt Lake City, Utah, area. He began his career as a carpenter while in high school, and began doing electrical work at the age of 18. At the age of 23 Ryan landed his first job as an electrical inspector, and subsequently became certified in building, plumbing, and mechanical inspection, as well as building and electrical plan review. Two years after becoming an inspector, he was approached by a friend in the area asking him to fill in at an electrical seminar for him. After his first class he was hooked, and is now a highly sought after seminar instructor. Ryan has taught in several states, and loves helping people increase their understanding of the Code.

 

He has been involved in writing and editing over 25 books on the National Electrical Code, and has taught the subject in multiple states and for multiple colleges and universities. He is self-employed as an NEC® consultant and inspector.

 
When Ryan isn’t working, he can often be found in his garage turning wood on his lathe, in his basement exercising, or any quiet place where he can dive into a book. He is also a rabid University of Utah football fan. Ryan married his high school sweetheart, Sharie, and they have two beautiful children together: Kaitlynn and Aaron.
State Licenses
AK - Engineer (General)
AL - Engineer (General)
AR - Engineer (General)
CO - Electrician (General)
DE - Engineer (General)
DE - Home Inspector (General)
FL - Engineer (General - 0000271)
Accreditation: This course explores important 2026 NEC updates related to enclosures, wiring methods, and cable installations. Participants will learn revised requirements for service conductors, cable support systems, conduit terminations, and raceway installations, helping them avoid common compliance issues and field corrections.
GA - Engineer (General)
IA - Engineer (General)
ID - Engineer (General)
IL - Engineer, Professional (General)
IL - Engineer, Structural (General)
KS - Engineer (Health, Safety & Welfare)
KY - Engineer (General)
LA - Engineer (General)
MA - Electrician (General)
MD - Engineer (General)
ME - Engineer (General)
MI - Engineer (General)
MN - Engineer (General)
MO - Engineer (General)
MS - Engineer (General)
MT - Engineer (General)
MT - Home Inspector (General)
NC - Engineer (General)
ND - Engineer (Health, Safety & Welfare)
NE - Engineer (General)
Accreditation: Vector Solutions is authorized by IACET to offer 0.1 CEUs for this program.
NH - Engineer (General)
NJ - Engineer (General - 24GP000006300)
NM - Engineer (General)
NM - Home Inspector (General)
NV - Engineer (General)
NY - Engineer (General)
Accreditation: Vector Solutions is authorized by IACET to offer 0.1 CEUs for this program.
OH - Engineer (General)
OK - Engineer (General)
OR - Engineer (General)
PA - Engineer (General)
PR - Engineer (General)
SC - Engineer (General)
SD - Engineer (General)
TN - Engineer (Health, Safety & Welfare)
TX - Engineer (General)
UT - Electrician (Core - 24737)
UT - Engineer (General)
VA - Engineer (General)
VA - Home Inspector (General)
VT - Engineer (General)
WI - Engineer (General)
WI - Home Inspector (General)
WV - Engineer (General)
WV - Home Inspector (General)
WY - Engineer (General)
Professional Organizations
American Academy of Environmental Engineers - AAEES - Member (General)
American Society of Civil Engineers - ASCE - Academy of Coastal, Ocean, Port & Navigation Engineers (ACOPNE) (General)
American Society of Civil Engineers - ASCE - Academy of Geo-Professionals (AGP) (General)
American Society of Civil Engineers - ASCE - American Academy of Water Resources Engineer (AAWRE) (General)
American Society of Home Inspectors - ASHI (General)
Association for Facilities Engineering - AFE - Certification (General)
Association of Energy Engineers - AEE - Certification (Technical)
Board of Certified Safety Professionals - BCSP - Certification (General)
Canada - Alberta Engineer (General)
Canada - British Columbia Engineer (General)
Canada - Manitoba Engineer (General)
Canada - New Brunswick Engineer (General)
Canada - Newfoundland and Labrador Engineer (General)
Canada - Northwest Territories and Nunavut Engineer (General)
Canada - Nova Scotia Engineer (General)
Canada - Ontario Engineer (General)
Canada - Prince Edward Island Engineer (General)
Canada - Quebec Engineer (General)
Canada - Saskatchewan Engineer (General)
Canada - Yukon Engineer (General)
International Association of Certified Home Inspectors - InterNACHI - Member (General)
International Association of Electrical Inspectors - IAEI - Certifications (General)
International Facility Management Association - IFMA - Certified Facility Manager (CFM) (General)
International Society of Automation - ISA - Certifications (General)
National Institute for Certification in Engineering Technologies - NICET (General)