The impedance of a second isolation transformer located in the immediate vicinity of the switchgear of the building electrical-power distribution system, which includes __________, can be used to limit the available fault overcurrent within the interrupting rating (operating limits) of the fuses or circuit breaker protecting the load circuit and the connected electrical utilization equipment.
A) the secondary winding resistance
B) the inductive load resistance of the iron core
C) the primary winding resistance
D) All of The answers
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Answer:D
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