Blog

Mar 26, 2019 | Written by Dan Laird | Arc Flash and Electrical Safety, MEP Engineering

Medium Voltage Systems


Background

Medium Voltage (MV) is typically defined as the range of 600-100,000V. In standard voltages, this includes 4160V systems up to 69kV systems even though most equipment ratings stop at 38kV.

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Feb 28, 2019 | Written by Scott King, PMP | Arc Flash and Electrical Safety

Top 5 Ways an Arc Flash Hazard Analysis Saves Lives


As electrical professionals, we hope that others understand the potential dangers of working around or on live electrical equipment. The reality is that most people do not. It only takes one incident to cause a fatal arc flash explosion. However, by receiving appropriate electrical safety training and following proper procedure, this can be avoided.

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Feb 21, 2019 | Written by Scott King, PMP | Arc Flash and Electrical Safety

The 3 Most Important Takeaways from Qualified Electrical Safety Training


In my first blog about Qualified Electrical Safety training, I shared with you why it is so important to get your staff trained.  In my second blog, I presented a few requirements that are needed to become a qualified electrical safety trainer.

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Feb 19, 2019 | Written by Scott King, PMP | Arc Flash and Electrical Safety

3 Requirements to Become a Qualified Electrical Safety Trainer


When I first started conducting arc flash assessments about 12 years ago, it never dawned on me to become a qualified electrical safety trainer.  We had always retained the services of a third-party vendor to provide this service to our customers.

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Feb 14, 2019 | Written by Scott King, PMP | Arc Flash and Electrical Safety

4 Reasons Your Staff Needs Qualified Electrical Safety Training Today!


My team and I have been conducting arc flash assessments all around the United States, Canada and Mexico for over 15 years and it brings us tremendous comfort that our clients are completing this extremely important platform for compliance with OSHA and NFPA 70E and the safety of their employees.

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Feb 12, 2019 | Written by Scott King, PMP | Arc Flash and Electrical Safety

Arc Flash Safety - Finding the information you need


Safety professionals are responsible for developing employee electrical safety programs for their organizations. Often, they learn about arc flash and electrical safety from on-line Google searches that lead to blogs that are typically written by other safety professionals who sell arc flash studies or electrical safety training... and it can get kind of stale.

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Feb 07, 2019 | Written by Scott King, PMP | Arc Flash and Electrical Safety

Can Any Company Perform an Arc Flash Assessment?


I recently received an email from an individual who downloaded a recording of my webinar 3 Ways to Complete an Arc Flash Assessment on a Limited Budget.”  In the email, I was asked the following question:

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Oct 02, 2018 | Written by Dan Laird | Arc Flash and Electrical Safety

Do I Need a PE to Perform an Arc Flash Study

State boards of examiners for engineers are charged with protecting the public in any aspect related to engineering design. These boards take their mandate seriously given the grave consequences that can result from negligence or incompetence on the part of designers.

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Aug 30, 2018 | Written by Dan Laird | Arc Flash and Electrical Safety, MEP Engineering

How to Interpret Harmonics Data – A Case Study

Power system harmonics are commonly created by Variable Frequency Drives (VFD’s), Uninterruptible Power Supplies (UPS), computer power supplies, and LED/fluorescent lighting. These devices draw distorted current which in turn distorts to overall voltage waveform.

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Aug 21, 2018 | Written by Dan Laird | Arc Flash and Electrical Safety, MEP Engineering

How to Program an SEL-351 Digital Relay


Background

The highest levels of arc flash energy are typically found at the secondaries of step-down transformers. This usually means the 480V main breakers, like the one shown above, will be over 40 cal/cm2. One method of mitigating this hazard is to install a manual reset recloser and digital relay on the primary side of the transformer.

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