USCG Exam PracticeSwitchboards and distribution systems
According to 46 CFR §111.30-29, what is the purpose of the test switch required at an emergency switchboard?
- A. To manually parallel the emergency generator with the main bus
- ✓ To simulate a failure of the normal power source and cause emergency loads to be supplied from the emergency power sourceCorrect
- C. To test the ground detection system for the emergency lighting circuit
- D. To verify the voltage regulator functional cut-out switch operates correctly
Why B is correct
46 CFR §111.30-29(b) states the test switch must simulate a failure of the normal power source and cause emergency loads to be supplied from the emergency power source. The other options describe real switchboard functions but are not the defined purpose of this specific switch.
Cited:46 CFR §111.30-29