How to Perform an Arc Flash Study – Part 3
Arc Duration: Time is everything when an arc flash occurs. The longer the duration, the greater the incident energy exposure – which is directly proportional to the duration. The 2018 Edition of IEEE 1584 defines the arc duration , also referred to…
Jim Phillips, P.E. Every three years I have the privilege of writing the NFPA 70E Changes article for National Electrical Contractor Association’s magazine: Electrical Contractor . The NFPA 70E 2021 edition of this standard will be available September 4, 2020…
Rocket Sled that Inspired “Murphy’s Law” OK, not the most professional sounding title for an article about electrical safety. But play along, you will be able to connect the dots rather quickly. Captain Murphy Around seventy years ago, Captain Murphy…
Plasma – Modify the Arc Rating or Modify the Incident Energy Calculations? I am frequently asked questions about the application of the 2018 edition of IEEE 1584 – especially electrode configurations and more specifically, about HCB (Horizontal Conductors/Electrodes inside a…
My 1974 IEEE Gray Book from College – Now part of the 3000 Series of IEEE Standards I have been a fan of the IEEE “Color Books” going all the way back to my Senior Year in college – yep,…
Arc Flash Duration Defined by Clearing Time of Upstream Protective Device One of the main variables that is part of an arc flash study is the arcing short circuit current. However, going back through the evolution of arc flash calculations,…
History of Arcing Short Circuit Calculations – 1980’s to Now: One of the main variables used for incident energy and arc flash boundary calculations is the arcing short circuit current. How the arcing current is calculated has gone through an evolution beginning back in the 1980’s up through today. The…
By: Rebecca Frain – Managing Director, Electrical Safety UK, Rotherham, England – A Brainfiller, Inc. Strategic Partner. Recently I had the opportunity to interview Jim Phillips regarding the new IEEE 1584 standard and what to expect with some of the…
Just Published – IEC 61482-1-1: It is once again a privilege to announce the recent publication of IEC 61482-1-1:2019 Live working – Protective clothing against the thermal hazards of an electric arc – Part 1-1: Test methods – Method 1: Determination of the arc rating…
125 kVA – Going, going, gone! After much speculation about the fate of the 125 kVA transformer “exception”, the 2018 Edition of IEEE 1584 – IEEE Guide for Performing Arc-Flash Hazard Calculations has finally been published and made it official.
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