Each motor branch circuit must be protected against short circuit and ground faults by an overcurrent device sized no greater than the percentages listed in Table 430.52. A branch-circuit ...

A few years ago, the term “arc flash” crept into our electrical technical vocabulary. Since that time, performing arc flash calculations remains a challenge for many of us. Calculating incident energy ...

One criterion in selecting a distribution substation transformer protective device is its ability to protect the transformer from secondary-side limited faults or “through-faults.” S&C Electric ...

Modern electrical systems, such as heating and ventilation controls, boiler controls, manufacturing and process control equipment, and railway signaling systems, usually have multiple inputs and ...