Research indicates that more than 50 % of OEMs typically design their machines with a minimum SCCR of 5 kA. However, with the new edition of the NEC, in force since January 2017, equipment of this type may no longer be code-compliant and may thus fail to be approved. Global suppliers such as Eaton that have a strong foothold in both North America and the IEC markets are uniquely aware of such regulatory updates.
This white paper explores the NEC 2017 standards and the best practices for determining the short-circuit current ratings, as well as the approved methods to increase them. Based on an understanding of these best practices, OEMS can build equipment with enhanced safety and reliability that can withstand a wider range of possible fault currents, enabling them to better support their end user customers.