Fill in the blank. An industrial control panel shall not be installed where the available short-circuit current exceeds the ____________________ of the industrial control panel in accordance with Sec. 409.110(4).
A) overcurrent rating B) fixed trip rating C) adjustable trip setting D) short-circuit current rating
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Answer: D
As outlined in a portion of Sec. 409.22(A), “An industrial control panel shall not be installed where the available short-circuit current exceeds its short-circuit current rating as marked in accordance with 409.110(4).”
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 [email protected].