Electrician Red Seal · Question
Scenario 2: A 25 hp, 575 V, 3-phase squirrel cage motor with a service factor of 1.15 is protected by a separate overload device. If the motor's nameplate FLC is 25 A, what is the maximum permissible setting for the overload device?
As per CEC Rule 28-306(1), for a motor with a service factor of 1.15 or greater, the overload setting shall not exceed 125% of the motor's full-load current rat
Start free practice for Electrician Red Seal
150 questions · no signup required · 40 free questions per day
Question: Scenario 2: A 25 hp, 575 V, 3-phase squirrel cage motor with a service factor of 1.15 is protected by a separate overload device. If the motor's nameplate FLC is 25 A, what is the maximum permissible setting for the overload device?
Answer options:
- 28.75 A ✅ 31.25 A
- 35.00 A
- 43.75 A
Correct answer: 31.25 A
Explanation: As per CEC Rule 28-306(1), for a motor with a service factor of 1.15 or greater, the overload setting shall not exceed 125% of the motor's full-load current rating. Therefore, 25 A × 1.25 = 31.25 A. The correct answer is "31.25 A". This capacity-fill scenario 2 reinforces the same competency for the electrician bank and follows the certified explanation standard.
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.