Arc Flash and Electrical PPE
Construction and general industry · Ver en español
Talking points
- An arc flash is an explosive release of energy caused by an electrical fault — temperatures can reach 35,000 degrees Fahrenheit, four times the surface of the sun.
- NFPA 70E defines approach boundaries: limited, restricted, and prohibited. Only qualified workers may enter the restricted and prohibited boundaries.
- Arc-rated clothing is categorized by PPE level (1 through 4) based on the incident energy at the working distance. Your site's arc flash analysis determines the required level.
- Never wear synthetic fabrics (polyester, nylon) when working near energized equipment — they melt onto skin and worsen burn injuries. Use arc-rated cotton or treated fabrics.
- Before working on or near energized equipment, review the arc flash label on the panel — it specifies the incident energy, working distance, and required PPE.
Ask the crew
Do you know the arc flash PPE category for the electrical panels in your work area — and where that label is?
Standards this talk is built on
- 29 CFR 1910.335
- NFPA 70E
A toolbox talk is a short safety briefing. It supports the training a standard requires; it does not replace it.
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Sign-in sheet
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| Name | Signature | Date |
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