What is Internal Arcing Fault Clearing Time Switchboard rating for internal arcing fault clearing time is defined as the amount of time a switchboard or panelboard can withstand an internal …
What is Arc-Flash? Arc-Flash is a type of electrical explosion that occurs when an electrical current leaves its intended path and travels through the air from one conductor to another …
I took my Assistant Electrical Engineering Board Examination in October 1983 without attending any review classes. I just borrowed some review materials from friends to prepare for the board . …
In 2009, I have written an article about the “Mis-Education of the Filipino Engineer”. After more than a decade, I still believe that despite the changes in the Philippine Educational …
Almost always, stationary battery rooms ventilation is an argument among engineers. However, seldom do their reasoning are based on scientific evidence to prove their position. IEC std 62485 provides a …
What is Short-Circuit Current Rating? The Philippine Electrical Code 2017 defines Short-Circuit Current Rating as the prospective symmetrical fault current at a nominal voltage to which an apparatus or system …