Hardwired vs Software Interlocks
As an Electrical Engineer, I am biased to hardwired interlocks. I don’t have any doubts software can be very efficient particularly during normal operating conditions, not to mention the speed …
Emergency Lighting Design, Requirement and Compliance
Why is Emergency Lighting Required Emergency lighting is one of the most important safety systems in a building or plant area. Emergency lighting makes it possible for people to safely …
IEC 60364-5-56 Safety Services (Emergency Systems)
Safety service is defined in IEC 60364-5-56 as an electrical system for electrical equipment provided to protect or warn persons in the event of a hazard, or essential to their …
Grid-connected Solar Photovoltaic (PV) System – Need to Know
Some companies and individuals installs grid-connected photovoltaic (solar power) system particularly in domestic applications give promises that electricity billing will be reduced. This marketing strategy of these so called PV …
Effects of Electrical Current to the Human Body
Electricity is one of the most essential inventions in modern times. Whether at home or in the workplace, electricity is normally used. Life of the modern man will not be …
Electrical Burns
Electricity is both our friend and enemy. It is our friend if we are aware of its dangers and know how to handle it properly. When working with electricity, safety …