Arc Flash and
Expertise in Electrical Engineering
Arc Flash and Fault Studies
Arc Flash Hazard Analysis
Injuries related to electricity can occur in two primary ways:
• Due to shock
• Due to arc flash
Arc flash injury is due to extreme heat generated when an electrical device is subjected
to an electrical fault, such as short circuits or ground faults. The National Electrical Code (NEC)
2005, Article 110.16 requires switchboards, panelboards, motor control centers, industrial control
panels, etc. to be filed Marked to warn persons of potential arc flash hazards.
Standards such as NFPA70E and IEEE 1584 provide means to calculate the arc flash energy at a particular
distance from the arc source. Depending on the distance of the person from the source of arc flash, the
standards indicate the type of personal protective equipment (PPE) to prevent serious injury. Arc flash
hazard analysis calculates the incident energy and the PPE requirements. Arc flash hazard labels of the
type shown to the right provide the information needed by facility owners, operators, maintenance personnel,
and others to be informed of the hazard potential and the PPE necessary to prevent serious injuries.
Contact PSE for comprehensive arc flash hazard analysis of your facility. Our professional engineers will
perform the computer simulations and provide permanent labels with the required information for each location
of the facility.
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