In an emergency restart of a motor, which control should you use?

• A. Emergency stop button
• B. Motor run switch
• C. Fuel cut-off
• D. Manual override

Answer: (B)

Restarting a motor after an emergency relies on the control that actually energizes the motor when you’re ready to bring it back online. The motor run switch is designed to start and keep the motor running once all safety checks are satisfied and any protective interlocks have been addressed. An emergency stop button is meant to shut the motor down immediately to prevent damage or injury, not to restart it. The fuel cut-off is not applicable to an electric motor and would only apply to engines that burn fuel, while a manual override is for bypassing normal control in special situations, not the standard restart sequence. So, for an emergency restart, use the motor run switch.