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…
Case Study – Arc Flash While Switching – Normal Operation?: A common question that I often hear in my NFPA 70E and IEEE 1584 Arc Flash Studies training courses is: “Can simply operating a device such as a fusible switch or circuit breaker cause an arc flash?” I respond to…
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,…
290 MW PV Installation in SW Arizona When the 2018 Edition of IEEE 1584 was published last year, one subject was conspicuously absent – DC arc flash. DC power systems are everywhere and include sources such as rectifiers, photo-voltaic installation,…
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…
UK’s Electrical Review – 2018 Edition of IEEE 1584 – Major Changes: One of my latest articles regarding the new 2018 IEEE 1584 Standard was recently published in the United Kingdom’s premier publication Electrical Review. In this article I take you through the major changes to new IEEE 1584 Standard – IEEE…
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