An arc flash is a short circuit through air that flashes over from one exposed live conductor to another conductor or to ground.
Check out this arc flash resource from OSHA to learn more.
Coming close to a high-amp source with a conductive object can cause the electricity to flash over
Dropping a tool or otherwise creating a spark can ignite an arc flash
Equipment failure due to use of substandard parts, improper installation, or even normal wear and tear
Breaks or gaps in insulation
Dust, corrosion or other impurities on the surface of the conductor
The arc flash boundaries are designed to keep employees safe while they are working near energized equipment.
The NFPA 70E 2012 edition instructs employers to conduct an arc flash hazard analysis (now “Arc Flash Risk Assessment”) to determine the amount of thermal energy that could be generated in an arc flash incident. The information is then used to define a flash protection boundary around the potential source, and to determine the level of arc-rated apparel and other personal protection equipment required when employees cross the boundary while they work on or near exposed live parts.
Qualified and trained employees that demonstrate skills and
Facility has a written safety program in place that is actionable
Personal protective equipment (PPE) available for employees
Arc flash hazard degree has been calculated
Equipment is properly labeled by owners
See changes to the 2015 Arc Flash Requirements
These labels should have relevant information to keep employees safe, including nominal system voltage, arc flash boundary and personal protective equipment information. Read more...
Learn more about arc flash requirements and the NFPA 70E 2015 Changes:
Find the labels you need right here or print your
own with an arc flash printer.
With the changes to the NPFA 70E requirements in 2015 there were some key updates to vocabulary, boundary
requirements, PPE, training and equipment labeling.