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Tuesday, June 20, 2023
Question:
Hi Charlie and thank you for continuing this informative code forum. It seems like every version of the Code expands the labeling requirements. Once again, the 2023 edition has added more arc flash labeling requirements. What is the difference between the Arc Flash labeling requirements in Section 110.16(A) and 110.16(B) and the labeling requirements from NFPA 70E? Thanks, Dennis Nelson
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Answer:
Hello Dennis, this is a great question. Two (2) labels pertaining to arc flash will be required for certain electrical equipment.
Section 110.16(A):
Applies to various electrical equipment installed in other than dwelling units, that is likely to require adjustment, examination, servicing, or maintenance while energized. This required field marked, or factory installed label is intended to serve as a general warning to the qualified person of a potential arc flash hazard.
Section 110.16(B):
This label is in addition to the one required in Section 110.16(A) and applies to service and feeder equipment rated 1000A or more, in other than dwelling units. This label shall meet applicable industry standards like NFPA 70E, providing the necessary arc flash hazard assessment information and include the date the label was applied.