10 things about arc flash safety to consider for mining applications

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Things about arc flash safety to consider for mining applications

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Why arc flashes occurAn arc flash is the explosive energy released when an electrical fault, for instance a short circuit, causes an arc. Arc flash event dangers include heat, flying debris, sound, UV radiation and more.

10 Things to consider about arc flash safety for mining applications

1Learn more at Eaton.com/arcflash



An explosion 4x hotter than the sunThe mere drop of a tool or accidental contact with electrical systems can set off an arc flash and instantly generate an energy explosion releasing temperatures in excess of 36,000˚F. That’s four times hotter than the sun.


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As powerful as an 8-stick dynamite blastA 10,000A arc on a 480-volt circuit can have the explosive force of 8 sticks of dynamite. Copper expands 67,000 times its volume during an arc flash event.3





Power intensive environments are especially vulnerableIn heavy power, continuous operation industries, arc flash poses a very real threat. Environments operating with 125 kVA or larger transformers call for special safety measures. Protecting personnel and equipment is everyone’s responsibility.

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Employees require educationElectrical workers should know how to understand arc flash labels and must wear the proper personal protective equipment (PPE).5





Arc flash labels provide advance warningTwo key pieces of information on the labels indicate:• Expected incident energy which drives the proper PPE

required for protection.• Distance a worker without PPE must work to avoid non-

curable burn.6





Avoiding electrical disaster Reducing the time that an event persists by tripping a breaker or clearing a fuse significantly reduces the arc flash incident energy.

Time and distance are the most controllable variables reducing the risk of arc flash issues. 7





Better equipment can helpInstalling the right equipment can help mitigate arc flash hazards. Specially designed low voltage motor control center (MCCs), switchgear and Arktite pin and sleeve devices can reduce the probability of electrical shock and arc flash energy during maintenance.





Human error is often to blameThe most common cause of arc flash incidents is human error. A majority of mistakes occur during routine maintenance of power system equipment or troubleshooting controls. 9





Good safety optimizes operational efficiencyA sound policy incorporating arc flash safety solutions will protect your people and equipment, minimize risk and increase uptime.

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See how you can benefit from our arc flash compliance program Learn how to keep workers and equipment safe

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10 things about arc flash safety to consider for mining applications

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