IEC Quarter Exam Questions And Verified Correct Answers

IEC Quarter Exam Questions And Verified Correct Answers 1. What determines the breaker or fuse size installed in a circuit? Circuit current 2. A dual-element, time-delay fuse opens very quickly when subjected to a(n) _____. I. Ground fault or II. Short circuit 3. The main bonding jumper (a green bonding screw, for example) that is shipped with and installed in a 120/240-volt, single-phase circuit-breaker panel at the service connects (bonds) the _____ to the metal panel enclosure. I. Branch-circuit neutrals 4. An overcurrent protective device (fuse or circuit breaker) must be able to carry _____ current without damage and to automatically open the circuit without damage when the condition occurs. I. Overload or II. Short circuit or III. Ground fault 5. What is the maximum voltage between circuit conductors when using plug fuses? 125