History of Earthing / Grounding
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. …
Renewable Energy Sources
Presently, carbon-based energy sources are utilized to a large extent, however, renewable sources of energy are slowly gaining importance due to concerns about climate change and environmental sustainability. Despite the …
Classification of Grounding According to Functions
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 …
Arc-Flash Hazard Warning according to Philippine Electrical Code 2017 Edition
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 …
Electrical Engineer’s Secondary Skill
More than a decade after the world economic slowdown, most popularly known as the Global Financial Crisis, job security is still a thing of the past. Staff or permanent roles …
Is your Solar Panel Installation Compliant to Philippine Electrical Code 2017 Edition?
Philippine Electrical Code 2017 Edition – Requirements Effective January 1, 2019, the Philippine Electrical Code 2017 Edition, requires PV systems to be provided with a rapid shutdown for the safety …