Technical Committees

02 Rotating Machines23A Metal Cable Trays
15C Electrical Tubing and Sleeving Products23A Electrical Non-Ferrous Rigid Conduit (Aluminum, Red Brass & Stainless Steel)
17A/121A/121B Industrial Control Equipment23A Nonmetallic Cable Trays
THSC 121A WG GR General Rules23A Metal Electrical Conduit and Fittings for Conduit and Cable
THSC 121A WG1 Medium Voltage Controllers23A Nonmetallic Raceway Products and Accessories
THSC 121A WG3 Pilot and Control Circuit Devices23A-62275 Cable Ties
THSC 121A WG4 Fire Pump Controllers23B-1 Switch and Outlet Boxes
THSC 121A WG5 Terminal Blocks23BC Wiring Devices
THSC 121A WG6 Transfer Switches23E Ground Fault Circuit Interrupters
17A/121A/17C/121B WG 7 Revising IEC-Based CANENA Harmonized Standards23H Pin and Sleeve Type Plugs, Receptacles and Connectors
THSC WG8 Transfer Switches over 750V32 Low Voltage Fuses and Fuseholders
THC 121A Enclosed Switches34 Lighting Products
121A Molded Case Circuit Breakers61C Safety Requirements for Household Refrigerators & Freezers
THC 121B Busways61D Air-Conditioning and Refrigeration Equipment
17D Panelboard and Switchboard70/31 Enclosures
121B Control Centers99 Connectors
20 Electric CablesTHC69-1 EVSE and Personnel Protection
THSC 20, Flexible Cords and CablesTHC69-2 EVSE Connectors
THSC 20, Building Wire and CableTHSC 20, Wire and Cable Test Methods
THSC23A-WG1 Electrical Rigid Metal Conduit – Aluminum, Red Brass, and Stainless SteelCANENA 121A PV Circuit Breakers
THC 26 Electric WeldingTHC 22H Uninterruptible power systems (UPS)
THSC 20 Electric Vehicle Cables


23A Metal Electrical Conduit and Fittings for Conduit and Cable
Raymond Horner
Director, Codes & Standards
Atkore International
16100 South Lathrop Ave
Harvey, IL 60426
Office: 708.915.1547
Muhammad Ali
1300 N. 17th Street, Suite 900
Rosslyn VA 22209 USA
Phone: (703) 841-3288
Fax: (703) 841-3388
To promote, harmonize and maintain North American standards for conduit,
tubing and cable fittings which are harmonized to the maximum extent practical with applicable IEC standards, and in accordance with applicable installation codes.
*CSA C22.2 No.45, Rigid Metal Conduit
*UL 6, Rigid Metal Conduit
*UL 797, Electrical Metallic Tubing
*CSA C22.2 No. 83, Electrical Metallic Tubing
UL 1242, Intermediate Metallic Conduit
*ANSI/UL 514B Conduit, Tubing and Cable Fittings
*CSA C22.2 No. 18.3 Conduit, Tubing and Cable Fittings
*NMX-J-017-ANCE Conduit, Tubing and Cable Fittings
*CSA C22.2 No. 18.4, Conduit, Tubing and Cable Support Hardware
*ANSI/UL 2239, Conduit, Tubing and Cable Support Hardware
*Harmonized standards
ANSI/UL 2225 Cables and Cable-Fittings For Use In Hazardous (Classified) Locations
IEC 61950: Cable management systems – Specifications for conduit fittings and accessories for cable installations for extra heavy duty electrical steel conduit
IEC 61386-1: Conduit systems for cable management – Part 1: General requirements
IEC 61386-21: Conduit systems for cable management – Part 21: Particular requirements – Rigid conduit systems
IEC 61386-22: Conduit Systems for cable management – Part 22: Particular requirements – Pliable conduit systems
IEC 61386-23: Conduit systems for cable management – Part 23: Particular requirements – Flexible conduit systems
IEC 61386-24: Conduit systems for cable management – Part 24: Particular requirements – Conduit systems buried underground
IEC 60423: Conduit systems for cable management – Outside diameters of conduits for electrical installations and threads for conduits and fittings
IEC 62444: Cable glands for electrical installationsReference standards:
CSA C22.2 No. 0.5 Threaded Conduit Entries
ANSI/NEMA FB 1 Fittings, Cast Metal Boxes and Conduit Bodies for Conduit, Electrical Metallic Tubing and Cable
27. EMT – Electrical Metallic Tubing

29. Electrical Rigid Metal Conduit

30. Conduit and Cable Fittings

92. Conduit and Cable Support Hardware

xx. Second amendment cycle for the binational standard for conduit , cable and support hardware
Publication Schedules



CANENA Project Tracker THSC23A Rigid-Steel (2017)

CANENA Project Tracker THSC23A EMT (2017)