Transcription of Short-Circuit Current Ratings - Eaton
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Short-Circuit Current Ratings - Eaton
Short-Circuit Current Ratings Short-Circuit Current Ratings Background The 2008 NEC has a new definition of Short-Circuit Current Interrupting Rating rating . Previously there was no definition of Short-Circuit Current rating (sometimes referred to as withstand rating ), although it was referenced in several sections on the marking and proper application of various types of equipment. Because the term is referenced in multiple locations of the Code, it was necessary to add a definition to Article 100 of the NEC . Article 100 Definitions Short-Circuit Current Rating. The prospective symmetrical fault Current at a nominal voltage to which an Normal Current Rating apparatus or system is able to be connected without sustaining damage exceeding defined acceptance criteria. Figure 2. What is Short-Circuit Current Rating? Interrupting rating is the maximum Short-Circuit Current an overcurrent protective device can safely interrupt under Short-Circuit Current rating (SCCR) is the maximum short - standard test conditions; it does not ensure protection of the circuit Current a component or assembly can safely withstand circuit components or equipment.
10 ©2007 Cooper Bussmann Short-Circuit Current Ratings Short-Circuit Current Ratings Background The 2008 NEC® has a new definition of “short-circuit current rating”. Previously there was no definition of shor
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