These are the severity levels of arc flash incident energy in ETAP. ETAP has a range for these incident energy levels that are categorized as A, B, C, and D. These are basically the categories specifies only in ETAP. We need to clarify here that it has no link with the IEEE NFPA 70E 2018 edition. Arc flash studies are widely done on ETAP that is why we discussed it in our article for better understanding.
For more queries, visit our link: https://allumiax.com/blog/nfpa-70e-2018-an-overview-of-4-different-arc-flash-ppe-categories
By visiting the link, you can also have a look on the IEEE NFPA 2018, 4 different Arc Flash PPE Categories as well.
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