With respect to objectionable currents, when are temporary currents not considered to be objectionable currents?

  1. No currents are considered objectionable.
  2. Temporary currents resulting from abnormal conditions such as ground faults, shall not be classified as objectionable current with respect to 250.6(A) and (B).
  3. Temporary currents resulting from any condition, such as a bolted fault, shall not be classified as objectionable current with respect to 250.6(A) and (B).
  4. All fault currents are considered objectionable.


Answer: B

As noted in 250.6(C), "Temporary currents resulting from abnormal conditions such as ground faults, shall not be classified as objectionable current with respect to 250.6(A) and (B).

Owen is the owner and president of National Code Seminars and the holder of master electrician certifications in 46 states. He can be reached at necexpert@aol.com.