What is ground-fault protection? The answer depends on whether you are talking about ground-fault protection of equipment or ground-fault protection of people. Just because ground-fault protection is ...

Ground fault protection is a cornerstone in ensuring the safety and operational reliability of modern power systems. Ground faults, which occur when an unintended electrical path connects a live ...

To be competitive, some electrical contractors often supply low-voltage (LV) service entrance switchboards and switchgear that meet the minimum safety requirements of the National Electrical Code (NEC ...

What is a ground fault and why is it a concern? How much variation in current is considered enough to cause a fault? Why can’t I just use a circuit breaker? What does a ground-fault protection device ...

For modern distribution protection, Negative Phase Sequence (NPS) Protection is often relegated in favor of common elements such as Overcurrent (OC) or Earth Fault (EF), but NPS is an incredibly ...

Electrical standards for PV systems: In part one of this series we looked at the background and scope of the U.S. National Electrical Code (NEC). We continued with a survey of 2011 NEC coverage of ...

Imagine you are sitting snug in your house on a stormy evening when, all of a sudden, the lights start flickering, and ...

Albert Einstein once said: “A clever person solves a problem. A wise person avoids it.” To mitigate the wildfire challenge, a utility must be both clever and wise. Southern California Edison (SCE) ...

Often, many different types of protection of the power transistor, motor or any part of the system are required in motor drive applications. Current protection of the inverter is one of the crucial ...

What is a ground fault and why is it a concern? How much variation in current is considered enough to cause a fault? Why can’t I just use a circuit breaker? What does a ground-fault protection device ...