Courtesy of www.MikeHolt.com. Based on the 2020 NEC. Article 240 provides the requirements for overcurrent protection and selecting/installing overcurrent protective ...

Power systems today operate in an environment where reliability and safety must be maintained despite rising loads, expanding ...

Changes to the 2011 NEC affect how you supply power to a structure and protect the conductors carrying that power. Most of these changes are subtle, so understanding the new requirements isn’t ...

Requiring only a handful of inexpensive components, the circuit breaker in Figure 1 responds to both overcurrent- and overvoltage-fault conditions. At the heart of the circuit, D 2, an adjustable, ...

Understanding the advantages, limitations, and use cases of each technology helps engineers create reliable consumer products.

For utilities, proper protection against high voltage transient overvoltages and overloads is critical to ensure maximum life of their power transformers. Failure to do so can result in significant ...

This 'back-to-the-basics' video that explains how non-directional overcurrent works. It shows the difference between a fuse and an overcurrent protections scheme with current transformer, relay and ...