When an AC or a DC motor fails to start,...

When an AC or a DC motor fails to start,...

Question 1 of 270705eccefa4bacbc34ba4d484fc

When an AC or a DC motor fails to start, besides checking for blown fuses or a tripped circuit breaker, what should be the FIRST step in troubleshooting the cause?

Question 1 of 27070

Q

When an AC or a DC motor fails to start, besides checking for blown fuses or a tripped circuit breaker, what should be the FIRST step in troubleshooting the cause?

🔍 Key Concepts

• Basic troubleshooting sequence for electric motors • Purpose and function of an overload relay in motor protection • Difference between checking for continuity/grounds vs checking protective devices

💭 Think About

• After verifying fuses and breakers, what protective device in the motor circuit is intentionally designed to open the circuit when the motor is overloaded or jammed? • Which step can be done quickly and safely without disconnecting multiple wires or disturbing the motor windings? • In normal practice, do you usually check the motor itself first, or do you confirm that all upstream protection and control devices are properly reset and closed?

✅ Before You Answer

• Identify which choice refers to a resettable protective device that will stop the motor during an overload but can be restored once the problem is cleared. • Eliminate options that require disassembly or detailed meter testing as a first step, rather than a quick check. • Confirm which component is most routinely checked or reset immediately after confirming fuses and breakers are OK.