Technical Committees

02 Rotating Machines23A-1 MCT: Metal Cable Trays
15C Electrical Tubing and Sleeving Products23A-3 NFRC: Electrical Non-Ferrous Rigid Conduit (Aluminum, Red Brass & Stainless Steel)
17A/121A/121B Industrial Control Equipment23A-2 NMCT: Nonmetallic Cable Trays
THSC 121A WG GR General Rules23A-5 CF: Metal Electrical Conduit and Fittings for Conduit and Cable
THSC 121A WG1 Medium Voltage Controllers23A-6 NMR: Nonmetallic Raceway Products and Accessories
THSC 121A WG3 Pilot and Control Circuit Devices23A-7 CTIE-62275 Cable Ties
THSC 121A WG4 Fire Pump Controllers23B-1 Switch and Outlet Boxes
THC 23B In Ground Boxes
THSC 121A WG5 Terminal Blocks23B 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 BreakersTHC Power Circuit Breakers
THC 121B Busways61D Appliances for Air-conditioning for Household and Similar Purposes
17D Panelboard and Switchboard70/31 Enclosures
121B Control Centers99 Connectors
THC 69-1 EVSE and Personnel Protection
THC 69-2 EVSE Connectors

THSC 20, Flexible Cords and CablesTHSC 20, Building Wire and Cable
THC 14, Dry-Type Transformers
THSC 23A-4-WG1 RC: Electrical Rigid Metal Conduit – Aluminum, Red Brass, and Stainless SteelCANENA 121A PV Circuit Breakers
THC 26 Electric WeldingTHC 22H Uninterruptible power systems (UPS)
THC 61C Safety of Refrigeration Appliances for Household and Commercial Use
THC 61 Safety of Household and Similar Electrical AppliancesTHC 37 Surge Protection
THSC 61D Appliances for Air-Conditioning for Household and Similar Purposes 
Supporting Company and Association Members