Jim Phillips, P.E. One word. Deadly! If someone performs energized electrical work without being properly trained, the results can be catastrophic – and deadly! I have seen this play out regularly during accident investigations and legal cases. The victim was…
By Jim Phillips, P.E. International Chairman IEC TC 78 As the International Chairman of IEC TC 78, a frequent question that I receive is “What is IEC TC 78?” IEC is the acronym for the International Electrotechnical Commission based in…
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…
Utility Short Circuit Data – Different Formats: National Electrical Code 110.9 Interrupting Ratings states that: Equipment intended to interrupt current at fault levels shall have an interrupting rating at nominal circuit voltage at least equal to the current that is available at the line terminals of the…
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…
Arc Flash Study Top 10 FAQs Part #2: How Does Everyone Else Do This? By Jim Phillips 3-Part Series ELECTRICAL SAFETY PRACTICES Does your company or client permit energized work where the incident energy is greater than 40 calories per centimeter squared (cal/cm2)? This question is about the…
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…
By Jim Phillips Performing electrical work without being properly trained can be deadly. I have seen this hold true during numerous investigations. Many companies proactively provide employee training and refresher courses at least every 3-years. Some companies use shorter intervals…
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