It has been sixteen long years since IEEE 1584 – IEEE Guide for Performing Arc-Flash Hazard Calculations was first published in 2002. This standard was highly celebrated back then because for the first time there was an internationally recognized standard…
When the topic of incident energy above 40 calories per square centimeter (cal/cm^2) comes up, the discussion can be quite interesting. People will sometimes refer to the high values in terms of a bomb or some other sensationalized description. Although…
New Exception 130.5(H) Exception No. 2 – Arc Flash Hazard Label Information May Not Be Required. It is amazing how the requirements for arc flash labeling have evolved with each new edition of NFPA 70E. Known as Arc Flash Warning…
The 2018 Edition of NFPA 70 provides a new definition for the term “Condition of Maintenance” : BUY NOW: 2018 NFPA 70E Changes Part 1 The state of the electrical equipment considering the manufacturers’ instructions, manufacturers’ recommendations, and applicable industry…
By Jim Phillips The 2017 National Electrical Code (NEC) contains several changes regarding arc flash: Download FREE Arc Flash Calculations 110.16(B) Arc-Flash Hazard Warning of Service Equipment 240.87 Arc Energy Reduction (Circuit Breakers) 240.67 Arc Energy Reduction (Fuses) The severity…
If you ask five different people what an arc flash label should look like, you will likely receive five different answers. Although there are no hard and fast rules regarding the label format, there are some minimal requirements found in…
2018 NFPA 70E Update – What’s New? What’s Changed?: Published: June 2017 By Jim Phillips Based on Jim’s article originally published in the May 2017 Issue of Electrical Contractor Magazine . It is hard to imagine that three years have passed since I wrote the 2015 NFPA 70E update…
How Does Everyone Else Do This? By Jim Phillips 3-Part Series ARC FLASH LABELS What do you list on an arc flash label when the prospective incident energy is greater than 40 cal/cm 2 ? This question is a variation…
How Does Everyone Else Do This? By Jim Phillips 3-Part Series There are many frequently asked questions about performing an arc flash study (risk assessment) and understanding electrical safety requirements. A careful read of standards such as NPFA 70E or…
Many safety labels use either Caution, Warning or Danger with a specific color associated with it. The U.S. National Electrical Code and NFPA 70E both reference ANSI Z535 to provide guidance regarding effective words, colors and symbols for signs and…
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