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Electrical Safety


Arc Flash Safety for Data Centers

15 arc flash mitigation strategies for the data center BY DAVID G. LOUCKS, Eaton Corporation Arc flashes—the fiery explosions that can result from short circuits in high-power electrical devices—kill hundreds of workers in the U.S. every year and permanently injure thousands more. They can also...


Arc Flash Analysis in DC Power Systems

Advanced approaches to addressing direct-current arcing faults BY MICHAEL FURTAK & LEW SILECKY, Mersen Let’s face it: there is not very much information available about direct current (DC) arc flashes. And, if you have searched in vain, well hopefully this feature will give you some insight...

Arc Flash


Arc Flash Mitigation

Arc Flash Mitigation in LV Systems

A common misconception within the electrical industry is that low-voltage systems (typically operating at 600V or lower) pose a lesser arc flash risk than their higher voltage counterparts. While the potential incident energy may be lower in some cases, underestimating the hazards present in...


Arc Flash Mitigation

Arc Flash Safety Strategies

Maximizing safety and minimizing downtime BY MAURICE D’MELLO, GE Industrial Solutions A generation ago, an arc flash hazard was an interesting tangent to consider in electrical system design, but not a major topic for discussion. That all changed with the Canadian Standard...

Safety

voltage testing

Absence of Voltage Testing – An Update on Accepted Approaches

Absence of voltage testing is a vital step in the process of verifying and establishing a de-energized state of any electrical system. As detailed in NFPA 70E clause 4.2.5., there is a specific and approved approach to establishing an electrical safe work condition with the following steps:

  • determine all possible source of electrical supply
  • interrupt the load current, open the disconnecting device for each possible source
  • verify where possible that all blades of the disconnecting...

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