Fault current limiters (FCLs) serve as essential protective devices within modern power systems, mitigating the potentially damaging effects of fault currents. By dynamically increasing their ...

Why is grounding so difficult to understand? One reason is because many do not understand the definition of many important terms. So let’s review a few important definitions contained in Articles 100 ...

Compliance with NEC 110.10 is critical for safety. We all want safe designs, but the engineer responsible for a UPS installation may not always understand how to accommodate the UL listing unique to ...

Per 2014 NEC Article 100, short circuit current rating (SCCR) is defined as: “The prospective symmetrical fault current at a nominal voltage to which an apparatus or system is able to be connected ...