Limiting transferred earth potentials
The IEEE Green book Std, 142-2007, IEEE Recommended Practice for Grounding of Industrial and Commercial Power Systems defines transferred earth potential as the voltage to earth of grounding systems that …
Counterfeits Can Kill
Every day, counterfeit electrical products are finding their way into our homes, businesses, and public institutions. These fraudulent products pose a serious financial and legal liability to the electrical industry, …
Electrical Hazards and Safety
Electrical Injuries Electrical injuries represent a serious workplace health and safety issue. Many workers who experience electrical injury have insufficient training for working on or around energized electrical equipment. The …
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 …