🔍 Key Concepts

• Basic troubleshooting steps for an electric motor that will not start • Difference between simple external problems (power supply, protection devices) and internal motor problems (windings, phases, etc.) • Normal order of safest, quickest, least invasive checks in electrical troubleshooting

💭 Think About

• Before opening up the motor or taking any measurements, what is the quickest and safest thing you can look at from the supply side? • Which choice relates to a component that is designed to open when there is a fault, and would completely interrupt power to the motor? • Which options require detailed testing or tools versus a simple visual or basic check that should always come first?

✅ Before You Answer

• Identify which option involves checking overcurrent protection (like fuses or breakers) that could stop power entirely • Ask yourself: on a ship, what would an engineer normally look at immediately when a motor won’t start, before using an ohmmeter or specialized instruments? • Verify which choices require the motor or circuit to be de-energized and disassembled, and which can be checked quickly and safely from the control panel or switchboard