Electrician Red Seal · Question
What is the minimum required bend radius for a 3-inch EMT (Electrical Metallic Tubing) bend, according to CEC Table 20?
CEC Table 20 specifies the minimum bend radius for rigid metal conduit and electrical metallic tubing. For a 3-inch EMT, the minimum bend radius is 400 mm (16 i
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Question: What is the minimum required bend radius for a 3-inch EMT (Electrical Metallic Tubing) bend, according to CEC Table 20?
Answer options:
- 150 mm (6 inches)
- 250 mm (10 inches)
- 300 mm (12 inches) ✅ 400 mm (16 inches)
Correct answer: 400 mm (16 inches)
Explanation: CEC Table 20 specifies the minimum bend radius for rigid metal conduit and electrical metallic tubing. For a 3-inch EMT, the minimum bend radius is 400 mm (16 inches). This is for bends made with a one-shot bender. Check Table 20 carefully. I made an oversight without 400mm, selecting the wrong option. Correcting the options: (A) 150 mm (B) 250 mm (C) 300 mm (D) 380 mm (E) 400 mm. Assuming the closest choice, 380mm (15 inches) would be for 2½ inch, and 400mm (16 inches) for 3 inches.
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