CMEQCMEQ Électricien

What wiring methods are allowed according to section 26 of the Code?

Section 26 of the Quebec Construction Code describes the wiring methods allowed for electrical installations:

  • Armoured cable (AC90, ACWU90): Indoor and damp use. ACWU90 can be used outdoors and buried
  • Non-metallic cable (NM-B): Dry indoor use only. Not allowed in buildings over 3 stories
  • Armoured waterproof cable (TECK90): General use, indoor/outdoor, direct burial, wet. The most versatile
  • Metallic conduit (EMT, RMC, IMC): RMC (rigid conduit) is required for installations exposed to impacts
  • Non-metallic conduit (PVC, ENT): Rigid PVC is used for burial, ENT inside walls
  • Wireway: For long conductor runs, with removable cover

Restrictions: NM-B is not allowed in garages, unfinished basements, or commercial buildings over 3 stories. AC90 is not allowed buried without additional waterproof sheathing. Schedule 80 PVC conduit is required within 600 mm of the ground surface for buried installations.

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