Electrician Red Seal · Question
In a 9-lead, dual-voltage wye-connected 3-phase motor, how are the windings connected for the lower voltage (e.g., 230V)?
For low voltage operation, the windings of a 9-lead motor are connected in parallel to handle higher current. This is achieved by connecting L1 to T1 and T7, L2
Start free practice for Electrician Red Seal
150 questions · no signup required · 40 free questions per day
Question: In a 9-lead, dual-voltage wye-connected 3-phase motor, how are the windings connected for the lower voltage (e.g., 230V)?
Answer options:
- Series-Wye: (L1-1), (L2-2), (L3-3), (4-7), (5-8), (6-9) tied together ✅ Parallel-Wye: (L1-1,7), (L2-2,8), (L3-3,9), (4,5,6) tied together
- Series-Delta: (L1-1,6), (L2-2,4), (L3-3,5), (7,8,9) open
- Parallel-Delta: (L1-1,6,7), (L2-2,4,8), (L3-3,5,9) tied together
Correct answer: Parallel-Wye: (L1-1,7), (L2-2,8), (L3-3,9), (4,5,6) tied together
Explanation: For low voltage operation, the windings of a 9-lead motor are connected in parallel to handle higher current. This is achieved by connecting L1 to T1 and T7, L2 to T2 and T8, L3 to T3 and T9, and tying T4, T5, and T6 together to form the star point.
Start free practice for Electrician Red Seal
150 questions · no signup required · 40 free questions per day
More about Electrician Red Seal
Related Questions
- A residential garage is to be wired with a 15 A, 120 V duplex receptacle. According to the Canadian Electrical
- During a renovation of a commercial kitchen, an electrician needs to replace an old single-phase, 240 V, 5 kW
- A commercial kitchen is being renovated, and several new 4 kW, 208 V, single-phase electric ovens are being in
- What is the minimum working space depth required in front of an electrical panel rated 200 A, 120/240 V, locat
- A Red Seal electrician is setting up temporary power for a construction site. The main temporary service is a
- A new industrial facility requires a 600 V, three-phase, 150 A feeder to supply a motor control centre. The co
More for Electrician Red Seal candidates
Practice tests
Question explanations
- A residential garage is to be wired with a 15 A, 120 V duplex receptacle. According to the Canadian Electrical
- During a renovation of a commercial kitchen, an electrician needs to replace an old single-phase, 240 V, 5 kW
- A commercial kitchen is being renovated, and several new 4 kW, 208 V, single-phase electric ovens are being in
- What is the minimum working space depth required in front of an electrical panel rated 200 A, 120/240 V, locat
Ready to practice?
Free, no signup required. Build a wrong-question list as you go.
Start Free Electrician Red Seal Practice →Related courses
Other Canadian certifications candidates often prepare for alongside this one.