Multiple Choice
To meet the requirements of NEC 110.9 and 110.10, it is absolutely necessary to determine the available fault currents at various points on the electrical system. If a ____ study is not done, the selection of overcurrent devices may be in error, resulting in a hazard to life and property.
A) short-circuit
B) transformer multiplier
C) line-to-line voltage
D) line-to-line wattage
Correct Answer:
Verified
Correct Answer:
Verified
Q3: A simple method of determining the available
Q4: The amount of short-circuit current from a
Q5: The amount of available short-circuit current decreases
Q6: A situation known as _ occurs when
Q7: The NEC includes a requirement that the
Q9: The value of the square root of
Q10: What is the approximate line-to-ground arcing fault
Q11: What is the importance of selective coordination?
Q12: How can you create a selective system
Q13: How can you create a selective system