By David Stymiest, PE, FASHE, CHFM, GBE
NFPA 70E® defines a series of boundaries related to electrical safety near energized equipment. These boundaries can be based on the voltage; the available short-circuit current and the predicted fault duration. The definitions are not repeated here, but the following considerations are useful to gain an overview of the issues involved.
• Flash Protection Boundary – an imaginary boundary within which there is the potential for a second-degree burn injury. Fire resistive protection (also called PPE) is required. This is the first item that must be determined by an arc flash hazard analysis.
Showing posts with label Electrical Arc Flash Safety: How close is too close?. Show all posts
Showing posts with label Electrical Arc Flash Safety: How close is too close?. Show all posts
Thursday, July 29, 2010
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