Electrician Red Seal · Question
A journeyperson is installing NMD90 (non-metallic sheathed cable) in a residential basement. The cable needs to pass through a wood stud wall. According to the Canadian Electrical Code (CEC), what is the minimum distance that the centre of the drilled hole must be from the nearest edge of the stud to protect the cable from nails or screws?
CEC Rule 12-516(2) requires that all non-metallic sheathed cables passing through studs or joists be located at least 25 mm (1 inch) from the nearest edge of th
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Question: A journeyperson is installing NMD90 (non-metallic sheathed cable) in a residential basement. The cable needs to pass through a wood stud wall. According to the Canadian Electrical Code (CEC), what is the minimum distance that the centre of the drilled hole must be from the nearest edge of the stud to protect the cable from nails or screws?
Answer options: ✅ 25 mm (1 inch)
- 32 mm (1.25 inches)
- 38 mm (1.5 inches)
- 50 mm (2 inches)
Correct answer: 25 mm (1 inch)
Explanation: CEC Rule 12-516(2) requires that all non-metallic sheathed cables passing through studs or joists be located at least 25 mm (1 inch) from the nearest edge of the wood member to protect against penetration by nails or screws.
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