Forensic Electrical Engineering Blog #3

Past – Present – Future 3-Blog Series By Jim Phillips, P.E. Blog #3: Evolution in Forensic Electrical Engineering There has been much advancement in the field of forensic electrical engineering […]

Bus Duct and Arc Flash Hazard?

I was asked to evaluate some “newer” bus duct technology that are finger safe, use a turn and lock connection or similar methods without turning off the power. It seems […]

Global Use of IEEE 1584

The surface area of the earth is approximately 197 million square miles, and IEEE 1584—IEEE Guide for Performing Arc-Flash Hazard Calculations has been covering more of it every day since […]

Arc Flash Hazard Calculation Studies

Setting up the electrical enclosure

In the earlier years of NFPA 70E and the emergence of arc flash protection requirements, many people would use the NFPA 70E Hazard/Risk Tables to determine what arc rated PPE […]

Coordination and NEC 240.87

NEC 240.87 has addressed a potentially hazardous situation beginning with the 2011 edition. When selective coordination is critical, e.g., minimizing the extent of an outage, a common design practice is to use […]