Electrician Red Seal · Question
Which of the following wiring methods is NOT permitted for direct burial?
AC90 (Armoured Cable) has an aluminum sheath that is not rated for direct contact with earth or concrete. Teck90, NMWU, and conduits like PVC or Rigid metal are
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Question: Which of the following wiring methods is NOT permitted for direct burial?
Answer options:
- Rigid PVC conduit
- Teck90 cable
- NMWU cable ✅ AC90 cable
Correct answer: AC90 cable
Explanation: AC90 (Armoured Cable) has an aluminum sheath that is not rated for direct contact with earth or concrete. Teck90, NMWU, and conduits like PVC or Rigid metal are specifically designed or approved for direct burial applications.
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- A residential garage is to be wired with a 15 A, 120 V duplex receptacle. According to the Canadian Electrical
- During a renovation of a commercial kitchen, an electrician needs to replace an old single-phase, 240 V, 5 kW
- A commercial kitchen is being renovated, and several new 4 kW, 208 V, single-phase electric ovens are being in
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