NFPA 70E requires arc-flash labels, but it does not mandate specific colors. This article explains how ANSI Z535 signal words influence label colors and what is considered best practice for compliance.
The 2-second arc duration is often misunderstood in IEEE 1584 and NFPA 70E applications. This article explains what the assumption really means and when engineering judgment must be applied.
The arc-flash boundary in NFPA 70E is often misunderstood as a “safe” distance. This article explains what the boundary actually represents and why below 1.2 cal/cm² does not mean risk-free.
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