Electrician Red Seal · Question
An electrician is running NMD90 (non-metallic sheathed cable) through bored holes in wooden studs. What is the minimum distance from the edge of the stud to the nearest edge of the bored hole, according to the CEC, if no protection plates are used?
Rule 12-516(1) of the CEC specifies that, where no protection plate is installed, the nearest edge of a bored hole through wooden members shall be not less than
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Question: An electrician is running NMD90 (non-metallic sheathed cable) through bored holes in wooden studs. What is the minimum distance from the edge of the stud to the nearest edge of the bored hole, according to the CEC, if no protection plates are used?
Answer options:
- 25 mm (1 inch) ✅ 32 mm (1 1/4 inches)
- 19 mm (3/4 inch)
- 12 mm (1/2 inch)
Correct answer: 32 mm (1 1/4 inches)
Explanation: Rule 12-516(1) of the CEC specifies that, where no protection plate is installed, the nearest edge of a bored hole through wooden members shall be not less than 32 mm (1 1/4 inches) from the nearest edge of the member. This ensures the cable is adequately protected from nails or screws.
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