USCG Exam PracticeMotor controllers and remote control
According to 46 CFR §111.70-3, which item of information is NOT required to be marked externally on a motor controller?
- A. Manufacturer's name or identification
- B. Number of phases
- ✓ Serial number of the controllerCorrect
- D. Current rating of trip setting
Why C is correct
46 CFR §111.70-3(d)(1) lists seven required external markings: manufacturer's name or identification, voltage, number of phases, current, kW (horsepower), identification of motor being controlled, and current rating of trip setting. Serial number is not among them.
Cited:46 CFR §111.70-3