Electrician Red Seal · Question
A three-wire control circuit typically requires what type of momentary pushbuttons for start and stop functions?
In a common three-wire control circuit, the START button is momentary N.O. (closes to actuate), and the STOP button is momentary N.C. (opens to de-energize the
Start free practice for Electrician Red Seal
150 questions · no signup required · 40 free questions per day
Question: A three-wire control circuit typically requires what type of momentary pushbuttons for start and stop functions?
Answer options: ✅ Normally open (N.O.) for Start, Normally closed (N.C.) for Stop.
- Normally closed (N.C.) for Start, Normally open (N.O.) for Stop.
- Both Normally open (N.O.).
- Both Normally closed (N.C.).
Correct answer: Normally open (N.O.) for Start, Normally closed (N.C.) for Stop.
Explanation: In a common three-wire control circuit, the START button is momentary N.O. (closes to actuate), and the STOP button is momentary N.C. (opens to de-energize the coil). This configuration provides built-in undervoltage protection.
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.