Electrician Red Seal · Question
An electrician is running 1/0 AWG R90 aluminum conductors in a run of Electrical Metallic Tubing (EMT) for a 3-phase, 4-wire feeder. The run includes a total of three 90-degree bends and two 45-degree bends over a distance of 25 m (82 ft.). What is the maximum number of additional 90-degree bends that can be added to this run without exceeding CEC limitations?
CEC Rule 12-1110(1) limits the total number of bends in a run of conduit between pulling points (e.g., boxes, conduit bodies) to not more than the equivalent of
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Question: An electrician is running 1/0 AWG R90 aluminum conductors in a run of Electrical Metallic Tubing (EMT) for a 3-phase, 4-wire feeder. The run includes a total of three 90-degree bends and two 45-degree bends over a distance of 25 m (82 ft.). What is the maximum number of additional 90-degree bends that can be added to this run without exceeding CEC limitations?
Answer options: ✅ 0
- 1
- 2
- 3
Correct answer: 0
Explanation: CEC Rule 12-1110(1) limits the total number of bends in a run of conduit between pulling points (e.g., boxes, conduit bodies) to not more than the equivalent of four 90-degree bends. The current setup has three 90-degree bends and two 45-degree bends, which is equivalent to four 90-degree bends (two 45-degree bends equal one 90-degree bend). Therefore, no additional bends can be added.
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