by Jeff Kershner | Dec 23, 2021 | Case Studies, Safety Tips
There’s a disconnect, or rather an improper connection that workers make between categories and values calculated when using the incident energy method. A worker should not correlate categories with incident energy. A real simple example can be made from... by Jeff Kershner | Dec 11, 2020 | Case Studies, Safety Tips
There are some obvious areas that typically result with high arc flash hazards. When we walk through a facility for the first time, we will notice these areas and immediately realize that we may soon be applying a sticker indicating a high arc flash value. Where are... by Jeff Kershner | Nov 3, 2020 | Case Studies
We have had customers ask about the blast pressure above 40 cal/cm^2. We’ve heard that being in an arc flash of this size will cause instant death from the blast pressure or an arc flash of this size will result in a closed casket instead of an open casket. We... 
by Jeff Kershner | Mar 3, 2020 | Case Studies, Featured articles
Maximum Available Fault Current… What is it? Have you ever noticed “Interrupting Rating” on the front of a breaker? Take a look at the highlighted area of the 60A breaker picture below: If this breaker were operating at 600V it has an interrupting... 
by Jeff Kershner | Nov 18, 2019 | Case Studies
What causes an arc flash to be big or small? We calculate arc flash “size” by following the equations described in IEEE 1584 2018. These equations are based on real life testing and measuring of arc flashes. Below is a simple explanation of what can cause... 
by Jeff Kershner | Feb 18, 2018 | Case Studies
What is clearing time? Ok, you’ve completed your arc flash study and now all your electrical equipment is affixed with arc flash hazard warning labels. You may notice that the incident energy values are different from one piece of equipment to the next. How can...