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Electrician Red Seal · Question

An electrician is installing a 20 A branch circuit in a damp location. Which of the following wiring methods is permitted by the Canadian Electrical Code (CEC) for this application?

TECK90 cable is suitable for damp and wet locations due to its moisture-resistant outer jacket and CSA approval for these conditions. NMD90 is for dry locations

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Question: An electrician is installing a 20 A branch circuit in a damp location. Which of the following wiring methods is permitted by the Canadian Electrical Code (CEC) for this application?

Answer options:

  • NMD90 cable ✅ TECK90 cable
  • AC90 cable
  • BX cable

Correct answer: TECK90 cable

Explanation: TECK90 cable is suitable for damp and wet locations due to its moisture-resistant outer jacket and CSA approval for these conditions. NMD90 is for dry locations only, and AC90/BX cables (armoured cables) are generally not rated for damp or wet conditions unless specifically designed for such, which is not the general case.

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