An accidental ground in a motor can be defined as an electrical connection between the wiring of the motor and what other aspect of the motor installation?
• Accidental ground in DC/AC motor circuits • Difference between current-carrying conductors and non-current-carrying metal parts • Basic purpose of equipment grounding in marine electrical systems
• Which part of the motor installation is not supposed to carry current during normal operation, but is metal and may become energized if there is a fault? • Look at each option and ask: is this primarily an overcurrent protection/control device, or is it a structural/metal part of the installation? • In marine electrical safety, what gets bonded/grounded to prevent exposed metal from becoming dangerous if insulation fails?
• Verify which option represents exposed or structural metal rather than a protective/control device in the circuit. • Confirm that an accidental ground means a fault path from the conductor to a grounded metal part, not to a fuse or breaker device under normal conditions. • Eliminate options that are mainly overcurrent protection or switching devices, not physical metal structure.
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