Question 3048 of 749 · Maryland Journeyperson Electrician Exam
What does selective coordination of OCPDs achieve?
Exactly one answer is correct.
You got of questions right. Here on the question pages nobody remembers which ones you got wrong. The trainer saves your progress and asks the mistakes again until they stick.
Or free: the 10 questions most people get wrong
Show solution
Correct answer to question 3048
- C: It limits an outage to the faulted circuit or equipment
Explanation
Selective coordination localizes an overcurrent condition so that only the OCPD nearest the fault opens. Upstream devices stay closed and other loads keep power. See the definition in Article 100.
More questions: Feeders and Overcurrent Protection
- 3050Which of the following is a standard ampere rating for fuses and inverse time circuit breakers?
- 3051A circuit breaker used to switch 120 volt fluorescent lighting on a regular basis must be marked with which designation?
- 3001Which location is prohibited for an OCPD in all three editions?
- 3002When the handle of a circuit breaker is operated vertically, what position must be the on position?
- 3004A series combination rating may not be used when motors connected between the two devices contribute more than what percentage of the lower-rated breaker's interrupting rating?
- 3005When may a feeder OCPD be sized at 100 percent of the continuous load?