Arc Flash Equipment Labeling Requirement
Equipment labeling requirement for arc-flash were initially introduced in NEC 2002 and later in NFPA 70E 2009.Since then, it has become a norm not only in North America but in …
Misfits of Design
Even simple projects could be complicated if not properly planned. Inability to respond to site conditions will make conditions even worse as safety will be compromised in all aspects. Some …
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 …