Brainfiller Videos

Harmonic Analysis – What if Utility Data Changes? If the utility short circuit current changes, what could possibly go wrong? It is quite an extensive list. However, I want to

Harmonic Analysis – Resonance Trends Parallel resonance in electrical power systems occurs when the system inductance is in parallel with power factor correction capacitors at a given location. If the

2024 NFPA 70E Which Edition of a Standard Do You Use if No Date is Given? NFPA 70E references other codes and standards such as other NFPA standards as well

2024 NFPA 70E Evidence of Impending Failure – Water Damage Evidence of Impending Failure – Water Damage 2024 NFPA 70E 110.2(B) Exception No. 1 lists seven conditions that must be

Each edition of NFPA 70E contains changes that impact or are seen throughout the entire standard. Known as “Global Changes” the 2024 Edition has three major global changes that include:

The 2024 Edition of NFPA 70E added “The equipment is rated for the available fault current” to the list of conditions for when a normal operating condition exists in Section

Five simple words “at each point of work” were added to step 7 of the Process for Establishing and Verifying an Electrically Safe Work Condition. Step 7 is testing absence

No Short Circuit Data Available? Try an Iterative Approach. The available short circuit data (fault current) from the electric utility or other source is a very important variable when conducting

Why Does Electric Utility Fault Current Change The available fault current from an electric utility can change over time creating unique challenges for power system studies such as short circuit

QUESTION: Would opening or closing a circuit breaker be considered normal operation?  What about resetting a tripped circuit breaker?  This short explanation is from the Q&A Session during my 2024

“NFPA 70E requires retraining at intervals not to exceed 3 years“ Retraining in safety-related work practices and applicable changes to NFPA 70E shall be performed at intervals not to exceed

This video provides a short overview of the 6 PDH/ 0.6 CEU On-Demand Training Program: Coordination Studies by Jim Phillips, P.E. A coordination study, sometimes known as protective device coordination

Achieving perfect coordination may seem as elusive as spotting a unicorn. In order to obtain perfect coordination, overcurrent devices are selected and set so that only the device nearest a

NFPA 70E states that retraining in safety-related work practices and applicable changes in this standard shall be performed at intervals not to exceed 3 years. This time frame is so

What do you do if the short circuit data is unavailable from the electric utility company? Can you use an “infinite source” calculation? Many say an infinite source is not

Why Horizontal Electrode Configuration? Although not the most common electrode configuration that is used when performing an arc flash study, using the Horizontal Conductors/Electrodes inside a metal box/enclosure (HCB) produces