Arc Flash vs arc resistant

“Arc flash” and “arc resistant” terms have become common in the industry when speaking about the possible consequences of an arcing fault on:

• An electrical installation
• Within an electrical switchboard
• Mixed together

However, their relevancies differ significantly regarding the conditions of the event considered as well as the characterization which can be performed on any piece of equipment.
This paper aims at reminding the basis of these two concepts and at showing how they should complement each other for personal safety, according to the various environment and working conditions.

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