Arc Flash Label Field Guide (Free PDF)
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The 2026 edition of the National Electrical Code removed the amperage threshold in Section 110.16. Service and feeder equipment in commercial buildings now needs a full data arc flash label at any rating once a state adopts the code. This 2-page field guide shows what has to be on the label, the NFPA 70E PPE category table, the table-method disqualifiers, and the changes that force a relabel.
Download the Arc Flash Label Field Guide (PDF, 2 pages)
What is in it
- Label anatomy: the four items NEC 2026 110.16 requires (nominal voltage, arc flash boundary, incident energy or PPE category, assessment date)
- PPE quick look: minimum arc rating by category, 4 to 40 cal/cm2
- Table method: the four conditions that disqualify NFPA 70E Table 130.7(C)(15)(a)
- Signal word: why NFPA 70E sets no DANGER cutoff
- Threshold history 2017 to 2026 and the equipment scope table
- Relabel triggers and the five inspection failures
Instructors, trainers and safety managers are welcome to hand this out, post it, or link this page. Want printed copies for a class or a crew? Email b.hanke@printproaz.com.
Go deeper
- OSHA arc flash requirements: the OSHA 4472 guide
- Arc flash labels: NFPA 70E 2024 requirements
- Arc flash labels printed from your study data
Sources: NEC 2026 110.16; NFPA 70E-2024 130.5 and 130.7. Print Pro AZ, 4415 S 32nd St, Phoenix, AZ. (602) 649-5305.