NA 2: UL 508A ; NFPA 79; C22.2 N°286 and N° 301

Advanced Professional Training on NFPA 79, UL 508A, C22.2 N°286, C22.2 N° 301, the NEC and the CE Code

Last edit: 03/02/2024

Training objective

TARGET GROUP: electrical department of machinery manufacturers

SCOPE: The aim of the course is the design of Electrical Control panels of machinery, in compliance with both the USA and the Canadian Technical Standards. Hereafter the four standards we will discuss during the training:

  • UL 508A: The standard for the design, construction and certification of Industrial Control Panels of machinery in USA. We are member of the Standard Technical Panel.
  • NFPA 79: inspired by EN 60204-1 and which deals with the construction of the switchboard and especially the characteristics of the  machine’s control panels. GT Engineering participates in the working group of the new edition that will see the light in 2024.
  • C 22.2 N°286: Since January 2022 it is the reference standard for Industrial Control Panels to be imported into Canada.
  • C 22.2 N°301: it is the reference standard for Industrial Control Panels and the whole electrical Installation of Machinery to be imported into Canada. It is the equivalent of NFPA 79 in Canada.



Professional training on US and Canadian regulations for electrical panels of machinery.

DURATION: 28 hours

MODULE 1 + MODULE 2 (total of 16 hours)  

MODULE 3 (4 Hours)

  • Main standards for cables and wireways in USA, Canada
  • UL 44: Thermoset-Insulated Wires and Cables
  • UL 83: Thermoplastic-Insulated Wires and Cables
  • UL 758 – C22.2 N°210: Appliance Wiring Material
  • UL 2556: Wire and Cable Test Methods
  • UL 1063: Machine-Tool Wires and Cables
  • TC-ER Cables
  • The NEC approach
  • Article 310: Conductors for General Wiring
  • Pneumatic and Electric circuits
  • The Cable Trays e and cables allowed
  • NFPA 79 Approach
  • Chapter 12: Conductors, Cables, and Flexible Cords
  • Chapter 13 Wiring Practices
  • UL 870: Wireways, Auxiliary Gutters, and Fittings
  • Cable Trays
  • Wiring around the machinery

MODULE 4 (8 Hours) on Both C22.2 N°286 and N° 301

  • The Canadian Approach to Electrical Safety
  • Previous Versions of the Standards
  • Main changes in C22.2 N286
  • Main Differences with UL 508A
  • Introduction to C22.2°286 and N°301
  • Grounding and Bonding
  • Wire bending space and Wiring space
  • Internal Wiring [4.6]
  • Installation of Components [4.7]
  • How to size a Branch Circuit in Canada
  • How to size the Feeder in Canada
  • Transformer Protection
  • Control Circuits
  • Supplementary Protections
  • Electrical Equipment Isolation
  • How to calculate the Control Panel SCCR in Canada
  • Distances from Active Parts
  • Other presciptions in C22.2 N°301
  • Marking
  • Temperature Testing
  • Dielectric Testing


GT Engineering is Member of the UL Standard Technical Panel (STP) for UL 508A; Principal (Special Expert) on the NFPA 79 Technical Committee; Member of WG 4-006 of the CE Code (Canadian Electrical Code C22.1); Member of the ANSI writing subcommittees for B11.0, B11.19, B11.26.