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 …
Potential Hazards Step potential is the voltage difference between the feet of a person near an energized, grounded object. A person on the ground is subjected to the risk of …
Mixing low voltage (LV) and extra-low voltage (ELV) control voltages in a multicore cable is a common mistake committed by inexperienced design engineers. Combining these control voltages may look good …
When Thomas Alva Edison started his electric illuminating company and began the electrical distribution system, he used only one insulated (from earth) conductor and the earth for the return conductor. …
Electrical equipment grounding for a power system can be classified according to functions: working grounding, lightning protection grounding, protective grounding, and instrumentation and control equipment grounding. Working Grounding This is …
Required Protective Clothing The Philippine Electrical Code 2017 Edition requires switchboards, panelboards, motor control centers, and other equipment in locations other than dwelling units to be individually field marked with …