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Cat 2 or Cat 4 protection - Table 13.7(C)(15)(a)

Question asked by ral@livelinesafety.com on Jul 1, 2019
Latest reply on Jul 8, 2019 by ral@livelinesafety.com

I have equipment, an MCC, where the the available fault current is less than 42 kA and the upstream OCPD has a cycle clearing time of less than 2 cycles. Can I then refer to row 1 since the OCPD cycle clearing is less than the 2 cycles?

 

 

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