Electrician Red Seal · Question
A journeyperson is installing a 20 A, 120 V circuit for lighting in a commercial office. The circuit consists of two conductors plus ground and will be run in Electrical Metallic Tubing (EMT). According to the Canadian Electrical Code (CEC), what is the minimum trade size of EMT required for this installation if using 12 AWG T90 nylon conductors?
For two 12 AWG T90 nylon conductors, Table 9A of the CEC (allowing for two conductors) indicates that 16 mm (1/2 in.) EMT is sufficient. Larger sizes would prov
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Question: A journeyperson is installing a 20 A, 120 V circuit for lighting in a commercial office. The circuit consists of two conductors plus ground and will be run in Electrical Metallic Tubing (EMT). According to the Canadian Electrical Code (CEC), what is the minimum trade size of EMT required for this installation if using 12 AWG T90 nylon conductors?
Answer options: ✅ 16 mm (1/2 in.)
- 21 mm (3/4 in.)
- 27 mm (1 in.)
- 35 mm (1 1/4 in.)
Correct answer: 16 mm (1/2 in.)
Explanation: For two 12 AWG T90 nylon conductors, Table 9A of the CEC (allowing for two conductors) indicates that 16 mm (1/2 in.) EMT is sufficient. Larger sizes would provide more capacity but are not the minimum requirement.
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